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Communications

62

515 HC04 - 8 June 2007

Modbus RTU Protocol 

Modbus RTU (remote terminal unit) is an industry standard protocol that 
allows the instrument to be easily interfaced to other communication 
devices.

The instrument implements the Modbus protocol as detailed in the 

Modicon 

Modbus Protocol Reference Guide 

PI-MBUS-300 Rev J (June 1996).

Message Format

In RTU mode, messages start with a silent interval of at least 3.5 character 
times. The first field transmitted is the device address. Following the last 
transmitted character, a similar interval of at least 3.5 character times marks 
the end of the message. A new message can begin after this interval. The 
entire message frame must be transmitted as a continuous stream. A typical 
message frame is shown below:

Except for broadcast messages, when a master device sends a query to a 
slave device, it expects a normal response. One of four possible events can 
occur from the master’s query:

•

If the slave device receives the query without a communication error, and 
can handle the query normally, it returns a normal response.

•

If the slave does not receive the query due to a communication error, no 
response is returned. The master program has to process a timeout 
condition for the query.

•

If the slave receives the query, but detects a communications error (parity 
or CRC), no response is returned. The master program has to process a 
timeout condition for the query.

•

If the slave receives the query without a communication error, but cannot 
handle it (for example, if the request is to read a nonexistent register), the 
slave will return an exception response informing the master of the nature 
of the error.

Instrument Address

The address of the instrument is programmable in the range from 1 to 247. 
Some addresses are reserved according to PI-MBUS-300 and have a special 
meaning:

•

0 = Broadcast, no response required from slave devices

•

248 to 255 Reserved

Address

Function

Data

CRC Check

1 byte

1 byte

n bytes

2 bytes

Содержание 515

Страница 1: ...Model 515 Flow Computer Operation Manual Application HC04 Heat Calculator Flow Computer for Stacked Differential Pressure Meters ISO 5167 V Cones 8 June 2007 ...

Страница 2: ...in part provided by Red Hat and any express or implied warranties including but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed In no event shall the author be liable for any direct indirect incidental special exemplary or consequential damages including but not limited to procurement of substitute goods or services loss of use data or p...

Страница 3: ...observe accepted safety practices for handling electronic devices especially during servicing Once the unit is installed grounded and interconnected the chances of static damage are greatly reduced Voltage Hazard Before connecting power to the instrument ensure that the supply voltage for the AC or DC input is suitable The AC voltage rating is as stated on the serial number plate Personnel should ...

Страница 4: ...iv 515 HC04 8 June 2007 ...

Страница 5: ...rical Connection 12 Rear Panel Connections 12 Terminal Designations 12 Inputs 13 Analog Input Connections 13 Logic Input Connection 15 Outputs 16 4 20mA Output Connection 16 Pulse Output Connection 17 Control Relays Alarms 17 RC Network for Interference Suppression 18 Communications 19 RS 232 Port 19 Infra red Port 19 RS 485 Port Advanced Option 19 Earthing and Shielding 20 4 Operation Normal Oper...

Страница 6: ...ssages 50 Warning Messages 51 6 Communications Overview 53 Hardware Interconnection 53 Protocols 55 Simple ASCII Protocol 56 Requests Format 56 Instrument Responses 57 Corrupted or Invalid Requests 61 Modbus RTU Protocol 62 List of Data Registers 63 Printer Protocol 67 Types of Printouts 68 Printer Data Control 71 Appendix A Glossary Glossary 73 Appendix B Model Numbers Product Codes 75 Custom Ver...

Страница 7: ...lly Powered Current Loop 14 7 Internally Powered Current Loops 14 8 RTD Connection 15 9 Logic Inputs Connection Diagram 16 10 Output 4 20mA Connection Diagram 16 11 Output Pulse Connection Diagram 17 12 Relay Connection Diagram 18 13 RS 485 Interface Connections 20 14 Logged Data Display Methods 25 15 Calibration Menu Tree Sheet 1 30 16 Calibration Menu Tree Sheet 2 31 17 RS 232 Cable Connections ...

Страница 8: ...viii 515 HC04 8 June 2007 ...

Страница 9: ...ont panel Pulse width and scaling of pulse output 4 20mA retransmission Selectable protocols on serial ports including Modbus RTU and Printer output Front panel adjustment of 8 24V DC output voltage Backlit display LCD backup Overview The 515 HC04 application measures the volume mass and energy content of fluid in a heating or cooling system by using single or stacked differential pressure flow in...

Страница 10: ...low is still calculated COOL Cooling mode is used when the application is for cooling only and assumes that the Feed Temperature will always be lower than the Return Temperature negative t If the Feed Temperature is higher than the Return Temperature positive t then no Energy is totalised however Volumetric Flow is still calculated BOTH This mode caters for applications where the flow of Energy ma...

Страница 11: ...ρflow density at flow conditions hTF Specific enthalpy at feed temperature hTR Specific enthalpy at return temperature qm mass flow C coefficient of discharge β diameter ratio of orifice to pipe ε fluid expansion factor for water ε 1 0 π universal constant 3 14159 d diameter of orifice bore for cone type meters substitute d2 with D2β 2 D diameter of pipe P differential pressure ρ density at flow c...

Страница 12: ...enu Variables Refer to Available Units of Measurement on page 78 for the list of available units Communications There are three communication ports available as follows RS 232 port standard RS 485 port advanced option Infra red port on front panel The ports are available for remote data reading printouts and for initial application loading of the instrument A A A Ac Main Menu Variables Default Uni...

Страница 13: ...n The instrument can be further tailored to suit specific application needs including units of measurement custom tags second language or access levels A distributor can configure these requirements before delivery Instrument parameters including units of measurement can be programmed in the field according to the user access levels assigned to parameters by the distributor All set up parameters t...

Страница 14: ... If the fluid is a gas the pressure ratio shall be 0 75 V Cone Limits The formulae used when either of the cone types V Cone or Wafer Cone are selected have been supplied by McCrometer The accuracy and applicability of the use of these differential pressure flowmeters should be confirmed by referring to the manufactures documentation Type of device d mm in D mm in β ReD Orifice plate corner or D D...

Страница 15: ...ercial Light Industry Environment Generic Emission Standard EN 50081 2 Industrial Environment Generic Immunity Standard EN 50082 1 Residential Commercial Light Industry Environment Generic Immunity Standard EN 50082 2 Industrial Environment In order to comply with these standards the wiring instructions in Chapter 3 Installation must be followed Type of Cone Line sizes mm in β McCrometer Precision...

Страница 16: ...Introduction 8 515 HC04 8 June 2007 ...

Страница 17: ...CSA and SAA approved enclosures available for hazardous areas Real Time Clock Optional Battery Type 3 volts Lithium button cell CR2032 Battery Life 5 years typical Analog Input General Overcurrent 100mA absolute maximum rating Update Time 1 0 sec Configuration RTD 4 20mA 0 5V and 1 5V input Non linearity Up to 20 correction points flow inputs RTD Input Sensor Type PT100 PT500 to IEC 751 Connection...

Страница 18: ...oltage 8 to 24 volts DC programmable Current 70mA 24V 120mA 12V maximum Protection Power limited output Isolated Output No of Outputs configurable output Configuration Pulse Digital or 4 20mA output Pulse Digital Output Signal Type Open collector Switching 200mA 30 volts DC maximum Saturation 0 8 volts maximum Pulse Width Programmable 10 20 50 100 200 or 500ms 4 20mA Output Supply 9 to 30 volts DC...

Страница 19: ...s panel mounting in a cutout that is 139mm wide by 67mm high Two side clips secure the unit into the panel Figure 2 shows the panel mounting requirements for the 500 Series Instrument Figure 2 500 Series Instrument Panel Mounting 145mm Side View 22mm 70mm 67mm 139mm 25mm 66mm Min 189mm Panel Cut out Front Panel 74mm Mounting Clip 138mm 147mm Rear Connectors Top View RS232 Port 515 HC04 8 June 2007...

Страница 20: ...P2 RTD input 7 AINP1 Analog input ch 1 Feed temperature input 8 Analog input ch 1 9 AINP2 Analog input ch 2 Return temperature input 10 Analog input ch 2 11 AINP3 Analog input ch 3 Main or low flow input 12 Analog input ch 3 13 AINP4 Analog input ch 4 High flow stacked input 14 Analog input ch 4 15 Vo 8 24 volts DC output Overload protected 16 G DC Ground 17 Vi DC power input DC power in 12 28V 18...

Страница 21: ...0mA may cause permanent damage to the input circuitry 0 5 and 1 5 Volt Inputs For externally powered voltage transmitters connect each transmitter to a pair of input terminals as shown in Figure 4 Refer to Terminal Designations on page 12 for specific terminal numbers for this application Figure 4 Externally Powered Voltage Transmitter Connect internally powered voltage transmitters as shown in Fi...

Страница 22: ...r three current loops at 24V DC more current loops can be supplied by using a reduced voltage setting Connect internally powered current loops as shown in Figure 7 Figure 7 Internally Powered Current Loops RTD Input The instrument uses 4 wire RTDs to provide optimum accuracy and stability It is not necessary to have equal cable lengths for the 4 wire RTDs but they should be no longer than 50 metre...

Страница 23: ...arity and can be connected in either direction However the excitation and the positive analog input must be connected to one side of the RTD Similarly the Signal Ground and the negative analog input must be connected to the other side of the RTD Logic Input Connection These input s are designed to be connected to CMOS TTL open collector signals or a voltage free contact switch A minimum activation...

Страница 24: ...ue to the dual purpose nature of the outputs take care not to set the output as an open collector pulse type signal when connected to a 4 20mA loop circuit 4 20mA Output Connection Figure 10 shows the connections for a 4 20mA output Output channel 1 uses terminals 27 and 28 output channel 2 uses terminals 29 and 30 Maximum Load Resistance Supply 9 0 02 ohms Figure 10 Output 4 20mA Connection Diagr...

Страница 25: ... alarm relays The operation of each alarm relay can be set to various modes as described in Alarms on page 41 There is also an equipment failure alarm option This alarm can have normally closed open contacts which open close when the instrument displays any error message as listed in Error Messages on page 50 or if there is a loss of power to the instrument The output characteristics of the relays...

Страница 26: ...RC suppression networks consist of a capacitor and series resistor and are commonly available in the electrical industry The values of R and C are dependent entirely on the load However if the user is unsure of the type of snubber to use values of 0 25µF and 100Ω will usually suffice Note that only mains approved RC suppression networks should be used The basic principle of the operation is that t...

Страница 27: ... port is located at the front panel directly below the row of status indicators The main function of this port is for retrieving current or logged data with a PC that has an infra red port RS 485 Port Advanced Option Up to 32 units can be connected to a common RS 485 bus Each unit has a unique address that the host computer uses to identify each instrument Figure 13 shows the connection of several...

Страница 28: ...he instrument Care must be taken to separate signal cables from power cables to minimize interference Overall earth should be connected at the instrument end only This connection should be as short as possible and connected to the earthing point on the rear terminal at pin 18 Twisted Pair Load 120 ohms Gnd Gnd Host Computer Comms Gnd Instrument Instrument 19 20 21 19 20 21 ...

Страница 29: ...rument calibration This default total can be used in two ways The default variables come first in the sequence of totals and rates that are displayed with the front panel keys If the display timeout option is enabled and no buttons are pressed for the selected period usually 30 seconds the display returns to the default total Status Lamps The status lamps illuminate to show the following condition...

Страница 30: ...n as follows NONE The user cannot reset the non accumulated totals INSTANT When the user presses the key the instrument resets all non accumulated totals DELAYED When the user holds the key for two seconds the instrument resets all non accumulated totals The instrument makes three beeps when it resets the totals and two beeps when a printout is started Press the key to step or scroll through the m...

Страница 31: ...y is overwritten by the newest one for that time interval Also note that the totals are saved as accumulated totals M FLOW Mass flowrate Hold the key to display peak value TEMP F Feed Temperature TEMP R Return Temperature TEMP D Differential temperature DIF PR Differential pressure Re NUM Reynolds number REPORT PRINT Only shown if print option is selected Hold the key to print log report as define...

Страница 32: ...key The system displays the hourly log The timebase and number of the log are shown for example LH 001 3 While holding the key use the key to print the data for the displayed log if the printer option has been selected HOUR 00 minutes each hour DAY 00 hours and 00 minutes each day WEEK 00 hours and 00 minutes each Monday MONTH 00 hours and 00 minutes on the first day of the month YEAR 00 hours and...

Страница 33: ...ure 14 Logged Data Display Methods 15 00 LH 006 16 01 15 00 LH 006 2002 LY nnn LM nnn LW nnn LD nnn LH nnn LY 002 LM 002 LW 002 LD 002 LH 002 YEAR LY 001 MONTH LM 001 WEEK LW 001 DAY LD 001 HOUR LH 001 Press at any time to exit from the Data Logs SET Hold to show the values for a log entry DISPLAY Press to select the time base Press to select the log number Hold and press to display the main menu ...

Страница 34: ...e loaded into the instrument 026357 CUSTOM VERS The Customer version code for this installation Refer to Custom Version Codes on page 76 for more information 123456 ABC123 S N The instrument serial number and unit tag The serial number is on the top line and unit tag is on the bottom left Both items are entered when the instrument application software is initially loaded If the unit tag is not use...

Страница 35: ...ation Set mode the instrument requests you to enter a password Any value will allow to change the settings of the programmable parameters but the correct password must be entered to change the password protected parameters Calibration View Mode Use the following procedure to view the calibration settings of the instrument 1 Press to scroll to the CAL MENU prompt 2 Hold the key The instrument beeps...

Страница 36: ...ent makes one beep for an incorrect password entry and enables you to change only the programmable parameters The instrument illuminates both the Cal and Set indicators 7 Edit the instrument parameters as required The programmable values are indicated by the flashing display To change a numerical value press to increase a value or press to decrease a value Press a key momentarily to change the val...

Страница 37: ...the display such as the choices of ODD EVEN or NONE for the communications parity bit checking Press or to change the option You can scroll through the options in either direction to make a selection as shown below Changing Numeric Settings The display flashes the digit that can be changed Press to select the digit that you wish to change Press or to increase or decrease the value of the selected ...

Страница 38: ...INP4 LINEAR TEMP F R TYPE PT MIN PT MAX PT DEF AINP1 2 PT100 500 4 20 0 5 1 5V DEFAULT EXCEPT DEFLT Press Press SET Continued on next page PARAMS OPER MODE METER LOC PRESS TEMP F CORR METER TYPE METER COEF SOURCE METER COEF VALUE D PIPE D ORIF E PIPE E ORIF T CAL ALRM1 TYPE POINT HYST selection ALRM4 selection TYPE POINT HYST ALRM2 TYPE POINT HYST selection ALRM3 selection TYPE POINT HYST ALARMS I...

Страница 39: ...he main calibration menu Press at any I O assignment position to move to the next I O assignment in the submenu eg pressing on ALRM1 will move you to ALRM2 DISPLAY SET DATE FORM CLOCK YEAR CLOCK M DAY CLOCK H MIN HOUR LOGS DAY LOGS WEEK LOGS MONTH LOGS YEAR LOGS RESET LOGS REPORT TYPE PRN TYPE PRINT ACCUM DEFAULT TOTAL SUPPLY VOLT T OUT MODE T OUT SEC RESET MODE RESET ACCUM DISPL TAGS BACK L T OUT...

Страница 40: ...To edit the units the correct password must be entered on entry to EDIT mode Press or to select the required units Refer to Available Units of Measurement on page 78 for the list of available units ACCEPT UNITS The Accept Units prompt will only appear if one or more of the units have been changed IMPORTANT Accepting the change of units will initiate a master reset All calibration parameters will r...

Страница 41: ...his parameter is available for viewing and editing only when the fluid type is set to DEFAULT water Enter the system absolute pressure used to provide greater accuracy of calculations for high pressure applications TEMP F CORR The feed temperature correction can be used for fine tuning of measurement This parameter is added to the feed temperature and is mainly used in cooling systems with RTD tem...

Страница 42: ...the calibration temperature If the meter is of a cone type enter the cone diameter If the diameter ratio β is given instead of the orifice or cone diameter d it can be calculated from the pipe diameter D as E PIPE unit Enter the thermal expansion coefficient of the pipe material If correction for thermal expansion is not required set the coefficient to 0 0 Some sample values are shown in Propertie...

Страница 43: ... at the minimum point plus the span value For example if the source signal is 4mA at a minimum differential pressure of 0kPa enter 0 as the minimum point If the source signal is 20mA at a maximum differential pressure of 200kPa enter 200 as the maximum point CUTOFF AINP3 AINP4 The Cut off is the lowest value that the instrument reads from the input sensor The cut off setting is the percentage of t...

Страница 44: ...ere is no filtering CORR AINP3 AINP4 Analog input non linearity can be corrected as follows LINEAR NON LINEAR to use the following linearity correction parameters Use or to select LINEAR or NON LINEAR NO PTS AINP3 AINP4 This parameter is available for viewing and editing only when the correction type is set to Non linear Enter the number of non linearity correction points Press or to select a numb...

Страница 45: ...d representation of the input for a hypothetical flowmeter The heavy black line represents the actual input from the flowmeter The light black line is the approximation that the instrument uses You can press the key to skip the non linear points and go to the next item OUT 01 AINP3 to AINP4 OUT n This parameter is available for viewing and editing only when the correction type is set to Non linear...

Страница 46: ...put 1 2 INPUT TEMP F AINP1 TEMP R AINP2 For this application Analog Input Channels 1 and 2 are assigned to Temperature Channel 1 is for measuring the feed line temperature and channel 2 is for the return line temperature TYPE AINP1 AINP2 Select the type of analog input source Press or to select 0 5V 1 5V 4 20mA PT100 PT500 or DEFAULT PT DEF AINP1 AINP2 The Default Point is a fixed value that the i...

Страница 47: ...age will continue to be displayed until the error is rectified or the input type is set to DEFAULT in calibration set mode Press or to select ENABLE or DISABLE UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM LOG SETUP TEST END SET UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM LOG SETUP TEST END PULSE OUTn or 4 20 You can assign any of the main menu variables to an output The nature of the output depends...

Страница 48: ...rmation see Output Pulse Factor on page 40 The output pulse factor cannot be 0 zero PT MIN OUTn PT MAX OUTn The Output Minimum Point and Maximum Point are available for viewing and editing only when the assigned variable is a rate 4 20mA output type The output minimum value corresponds to the 4mA point and the output maximum value corresponds to the 20mA point Setting the output range differently ...

Страница 49: ...n the alarm condition no longer exists However you may need to configure external alarm devices that require acknowledgement for cancelling an alarm Equipment Failure Alarm Any alarm relay can be assigned as an equipment failure alarm This alarm setting can have normally closed open contacts that open close when the instrument displays any error message as listed in Error Messages on page 50 or if...

Страница 50: ...rm type except equipment alarms Alarm hysteresis loops occur when the alarm toggles continuously on and off when the process variable is close to the setpoint For a high alarm the alarm activates when the value of the variable rises above the alarm setpoint and deactivates when the value falls below the alarm setpoint minus the amount of the hysteresis setting if any For a low alarm the alarm acti...

Страница 51: ...vailable if the option with Real Time Clock is installed For the selected port press or to select the desired protocol BAUD RS232 RS485 INFRA The Baud setting is the speed of the communication port in data bits per second The baud rate of the instrument must match the baud rate of the communication device that the instrument is connected to Use or to select 2400 4800 9600 or 19200 baud PARITY RS23...

Страница 52: ...case you should set the current time and date so that the instrument continues to log data at the correct times RTU DATA The Modbus RTU data format for the 2 register 4 byte values can be set as either floating point or long integer values Use or to select FLOAT or INTEGER RTU ADDR The Modbus RTU protocol address must be in the range of 1 to 247 When multiple instruments slaves are connected to on...

Страница 53: ...ut if the printing option is used UNITS PARAMS INPUTS OUTPUTS ALARMS COMMS TM LOG SETUP TEST END DATE FORM Clock Date Format The European date format is dd mm yyyy or Day Month The American date format is mm dd yyyy or Month Day Press or to select DAY M or M DAY CLOCK YEAR The Clock Year defines the current year for the real time clock CLOCK M DAY The Clock M DAY setting defines the current month ...

Страница 54: ...ORT TYPE The Printer Protocol Report Type determines the nature of the printout from the REPORT PRINT HOLD SET prompt in the main menu The following report types available in this instrument are REP 01 Hourly Logs Report REP 02 Daily Logs Report REP 03 Weekly Logs Report REP 04 Monthly Logs Report REP 05 Yearly Logs Report REP 06 Previous Day s 24 Hour Report 0Hr 23Hr minimum 48 hourly logs requir...

Страница 55: ...ariable after the user has finished reading other information to cancel the calibration mode and return to the default display if the user does not exit from the calibration mode for any reason Press or to select the display timeout function as follows DISABLE Timeout is completely disabled EN DISP Timeout is enabled during Normal mode and Calibration View mode EN EDIT Timeout is enabled during Ca...

Страница 56: ...ly by the manufacturer or the distributor Press or to select the Display Tags option as follows DEFAULT the instrument displays the default English tags USER the instrument displays the user defined tags BACK L T OUT If the backlight timeout is enabled and there is no user activity any keys pressed for a period of 10 seconds the display backlight switches off to save power The backlight switches o...

Страница 57: ...ms For a pulse output such as a total the output produces a pulse train as follows ON a pulse train with a pulse width as set for the particular output in the Outputs menu OFF no output For a 4 20mA output such as a rate the output is as follows HI the output is set to 20mA LO the output is set to 4mA ALRMn STATE or REL n You can control the state of the relays alarms Press the or keys to set the ...

Страница 58: ...UTS section of calibration the default value will automatically be used so that all calculations can continue The error message will still continue to scroll across the display until the fault is corrected at which point the calculations will revert to using the live input Override Error Condition While a fault is being rectified on an analog input for a process parameter an operator with calibrat...

Страница 59: ...o use a programmed default value instead of the sensor signal Lo Range Flow Input Failure The low range flow transmitter analog input 3 has failed Hi Range Flow Input Failure The high range flow transmitter analog input 4 has failed Diameter Ratio is out of Range The diameter ratio beta is out of the allowed range The pipe and or orifice diameters specified in the Parameters menu should be within ...

Страница 60: ...Instrument Calibration 52 515 HC04 8 June 2007 ...

Страница 61: ... communication ports RS 232 port on the rear panel DB9 female connector RS 485 port on the rear panel advanced option only Infra red port on the front panel The appropriate interface and protocols are selected during calibration RS 232 Port The RS 232 port provides communication between the instrument and one other device such as a host computer or a printer Note A printer must have a serial port ...

Страница 62: ...ith specific slave devices On RS 485 links an external terminating resistor must be connected at the furthest end of the cable When multiple instruments are connected they should be daisy chained in a multidrop configuration as shown in Figure 18 Up to 32 units can be connected to the interface at a maximum distance of 1200 metres Figure 18 RS 485 Connections Instrument 2 3 5 7 8 TxD RxD GND CTS R...

Страница 63: ...col is only available if the option with Real Time Clock is installed Also a protocol cannot be assigned to more than one port at a time as described in Communications on page 43 ASCII In this ASCII protocol each command and response is a string of ASCII characters This proprietary protocol is developed by Contrec to allow for simple information interchange The main advantages of this mode are tha...

Страница 64: ...al broadcast commands For single instrument communications the address can also be set to 000 in the request Refer to Communications on page 43 for setting the instrument address Note The instrument always responds with its address in the header regardless of the type of request Log Type and Number The log type and number enables a communicating device to retrieve data from the instrument The data...

Страница 65: ... on the front panel of the instrument For example a request for LH003 would return the data for the log entry two hours prior to the most recent hourly log entry If the current time is between 9 00am and 10 00am the most recent hourly log LH001 was recorded at 9 00 Therefore LH002 is for 8 00 and LH003 is for 7 00 After 10 00am in this example LH003 becomes the 8 00 log Instrument Responses The in...

Страница 66: ...o return the value of one or more requested variables All totals are transmitted as accumulated totals Variables Request and Response Example The following request is for the only instrument that is connected to the communication port to return the values of all main menu variables 8 9 1 2 3 4 5 6 M W h E N E R G Y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 23 24 25 26 27 Value aligned ...

Страница 67: ... 0 0 L F C R 6 1 1 6 M W h E N E R G Y L F C R 1 6 5 7 3 M W P O W E R L F C R 1 3 2 0 5 3 0 m 3 V O L U M E L F C R 5 8 3 0 0 m 3 M V F L O W L F C R 7 6 2 7 1 1 7 K G M A S S L F C R 3 4 4 4 6 0 K G M M F L O W L F C R 2 3 0 0 0 0 D E G C T E M P L F C R 1 2 6 0 M P A P R E S S L F C R 0 1 7 4 m 3 K G S P V O L L F C R 2 8 8 6 7 6 0 K J K G S P E N T L F C R L F C R A 0 0 1 R V D L F C R A 0 0 1...

Страница 68: ...formation request asks the instrument to return the general information about the model and version codes The instrument exception status is returned as a part of the header as it is with the header for all command responses A 0 0 1 R L H L F C R A 0 0 1 2 0 0 2 0 3 1 4 1 8 2 5 0 0 0 0 L F C R 2 4 L F C R L F C R Command Description RCN Clear the non accumulated resettable totals RCA Clear the acc...

Страница 69: ...ry If the instrument receives a request message in the correct format but for a non existent option it returns only the message header For example if the instrument received the following request variables message A001 RVT it will return only the header because there is no T option for the Variables Request message A 0 0 1 R I G L F C R A 0 0 1 2 0 0 2 0 3 1 4 1 8 2 5 0 0 0 0 L F C R 5 1 5 M O D E...

Страница 70: ... One of four possible events can occur from the master s query If the slave device receives the query without a communication error and can handle the query normally it returns a normal response If the slave does not receive the query due to a communication error no response is returned The master program has to process a timeout condition for the query If the slave receives the query but detects ...

Страница 71: ...rticular function of the instrument Note Conventional numbering of registers often starts from 1 therefore be aware that register 1 in this case has address 0 and so on Code Name Description 03 Read data register s Obtain the content of one or more 2 byte data registers 06 Preset data register Preset one 2 byte data register 07 Read status register Obtain the content of 1 byte status register 16 P...

Страница 72: ... DT 7 Volume Flowrate R DT 9 Mass R DT 11 Mass Flowrate R DT 13 Feed Temperature R DT 15 Return Temperature R DT 17 Differential Temperature R DT 19 Differential Pressure R DT 21 Reynolds Number R DT 23 Reserved R DT 25 Reserved R DT 27 Reserved R DT 29 Reserved R DT 31 Year Current Date Time or Logged Date Time Stamp see register 38 Log Number Only current Date Time can be edited R W I 32 Month R...

Страница 73: ...r X 3rd byte low byte register X 1 4th byte high byte register X 1 Register Name Comments Read Only or Read Write Type 41 Exception Status 00 no error 01 analog input 1 failure 02 analog input 2 failure 03 analog input 3 failure 04 analog input 4 failure 05 invalid calibration parameter 06 invalid reference parameter 07 invalid property 08 to 09 reserved 10 process parameters out of range 11 input...

Страница 74: ...ary representation of relay state 0 open 1 closed B0 relay 1 LSB B1 relay 2 B2 relay 3 B3 relay 4 R I 46 Relay Control 0 to 15 Binary representation of relay control 0 open 1 close B0 relay 1 LSB B1 relay 2 B2 relay 3 B3 relay 4 R W I 47 Relay Control Source 0 to 15 Binary representation of relay control source 0 Local controlled by instrument operation 1 RTU controlled by Modbus register 46 B0 re...

Страница 75: ...s The list of report types is as follows REP 01 Hourly Logs Report REP 02 Daily Logs Report REP 03 Weekly Logs Report REP 04 Monthly Logs Report REP 05 Yearly Logs Report REP 06 Previous Day Hourly Logs 0Hr 23Hr minimum 48 hourly logs required The number of logs printed in each report are determined by the values programmed for each timebase in the TM LOG menu Printer Types The list of available p...

Страница 76: ... Variable unit value Variable unit value etc Custom Footer Line 1 Custom Footer Line 2 Custom Footer Line 3 separation line Note that blank header and footer lines are not printed Docket Number The docket number that appears on the live data printout indicates the print number This number is cleared when the Accumulated totals are reset If the Reset Mode is set for Delayed where a print can be gen...

Страница 77: ...te Time Status Variable unit value example total as Accum only Variable unit value etc Custom Footer Lines separation line Log Report Printing As there is the likelihood that the reports can be of a considerable length it is strongly recommended that only the 80 Column printer with Z fold tractor feed paper be used This is just as much for the memory storage of printer as it is for the reliable pa...

Страница 78: ...unit value example total as Accum only Variable unit value etc separation line Log No Data Not Available separation line Log No Date Time Status Variable unit value example total as Accum only Variable unit value etc If the unit is programmed for 0 logs for a particular time base then the report for that time base will only consist of the header and ID information and a Data Not Available message ...

Страница 79: ...h this printer to check for paper status before printing If a print is attempted but there is no paper the PAPER OUT message will be scrolled The instrument will continue to poll the printer for paper and if paper is detected before a communications timeout expires the print will commence COMMS TIMEOUT This message is relevant for all printer types and will be activated for the following condition...

Страница 80: ...Communications 72 515 HC04 8 June 2007 ...

Страница 81: ... red Developers Association is a group of computer and software manufactures who have agreed on a format for communication among infrared devices Modbus RTU The Modbus protocol is a message structure for communications between controllers and devices regardless of the type of network In RTU remote terminal unit mode each 8 bit byte in a message contains two 4 bit hexadecimal characters This mode h...

Страница 82: ...74 515 HC04 8 June 2007 ...

Страница 83: ...l time clock data logging RS232 DB9 and Ethernet RF communication ports not yet available Relay Type 1 Electromechanical relays only 2 2 electromechanical and 2 solid state relays 3 Solid state relays only not yet available Power Supply E For 220 240VAC A For 110 120VAC D For DC power only 12 28VDC Display Panel Options F Fully optioned with backlight LCD backup and Infra Red comms port PCB Protec...

Страница 84: ... Information Request on page 60 Code Description Origin Code Identifies Distributor 00 Factory Default Application 01 Contrec Pty Ltd Melbourne Australia 02 Contrec Pty Ltd Sydney Australia 03 Contrec Europe Ltd West Yorkshire UK 04 Contrec USA LLC Pelham AL 35124 USA 05 Flowquip Ltd Halifax UK 06 etc User Language 0 English Default 1 German 2 Dutch 3 French 4 Spanish 5 etc Distributor s Code 000 ...

Страница 85: ...s application A indicates a generic analog input such as level d indicates a density input F indicates a generic flow input such as for volume or mass frequency or analog H indicates a high flow input for stacked inputs L indicates a low flow input for stacked inputs P indicates a pressure input q indicates a quadrature input t indicates a temperature input For example F tP is an instrument with F...

Страница 86: ...kg min kg h g s g min g h Ton min Ton h Ton D lb s lb min lb h Klb min Klb h Klb D Mass K Factor P kg P g P Ton P lb P Klb Energy kJ MJ GJ kWh MWh kBTU Ton h therm cal kcal Mcal Power kJ h MJ h GJ h kW MW kBT M kBT h Ton therm min therm h kcal h Mcal h Energy K Factor P kJ P kWh P kBTU P Ton h P therm P kcal Temperature Deg K Deg C Deg F Deg R Pressure Pa kg m2 kg cm2 kPa MPa mbar bar psi Atm inH2...

Страница 87: ...ls Material Linear Coefficient of Thermal Expansion in PPM C Linear Coefficient of Thermal Expansion in PPM F AISI 304 Stainless Steel 17 0 30 6 AISI 310 Stainless Steel 14 4 25 9 AISI 316 Stainless Steel 16 7 30 1 AISI 420 Stainless Steel 10 0 18 0 Monel 14 3 25 7 Carbon Steel 11 2 20 2 ...

Страница 88: ...80 515 HC04 8 June 2007 ...

Страница 89: ...e format 45 real time 44 codes application information 76 customer version 76 exception 65 product number 75 coefficients expansion 79 communication connections 19 protocols 55 communications 4 53 menu 43 connections alarm 17 communication 53 communications 19 electrical 12 input 13 output 16 customer version codes 76 customizing a printout 67 D daily logging 45 data log viewing 23 24 data logging...

Страница 90: ...port 19 43 55 input 0 5V 13 4 20mA 14 connections 13 analog 13 failure 50 RTD 14 sensor failure 50 specifications 9 types 5 inputs menu 35 installation 11 instrument address 56 request format 56 responses 57 settings 32 interconnections communication 53 interference suppression 18 ISO 5167 1 1 isolated outputs 5 K key ACCUM 22 DISPLAY 22 RATE 22 RESET 22 TOTAL 22 keys front panel 22 L lamps status...

Страница 91: ...sh driver 44 flash driver assignment 44 infra red 19 43 55 RS 232 19 43 53 RS 485 19 43 54 power supply interruption 44 printer data control 71 error messages 71 protocol 67 report types 67 printer types 67 printouts individual logs 69 live data 68 log report 69 types 68 product number codes 75 programmable parameters 27 protocol ASCII 56 communication 55 Modbus RTU 62 printer 67 pulse factor outp...

Страница 92: ...ngs 51 T terminal designations 12 test menu 48 thermal expansion 79 timeout mode 47 time 47 tm log menu 44 TOTAL key 22 total default 21 U unit tag 26 units menu 32 V version customer 76 view data logs 23 24 W warnings 51 weekly logging 46 Y yearly logging 46 ...

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