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BusWorks®  Model 989EN U

ser’s Manual       Modbus TCP/IP Digital I/O & Counters 

_________________________________________________________________________________ 

 

_______________________________________________________________________________________ 
Acromag, Inc.   Tel:248-295-0880  Fax:248-624-9234   Email:

[email protected]

  http://www.acromag.com 

14 

 
This module supports Modbus over TCP/IP.  You may use your own 
software to issue Modbus commands to this module (see Modbus 
Registers), or you may use a standard web browser, as these modules have 
built-in web pages that allow you to setup and control the module.  Simply 
execute your web browser, type the IP address assigned to your module in 
the “Address” window (

http://128.1.1.100/

 for our example), click [Go], and 

you will be presented with a Home Page window similar to that shown below: 

 

 

 

 
The Home Page provides buttons to access the other web pages of this 
module that are used to configure the network parameters, change the user 
name and password, and operate the module.  For each new browser 
session that accesses the Home Page of this module, you will be presented 
with a window prompting you to enter the current User Name and Password 
as shown on the following page.  This information is required before the 
program will allow you to make any other selections.  

The default user 

name and pa

ssword is “User” and “password” respectively.

  After 

entering these defaults, you may wish to invoke the Password Configuration 
Page to change these parameters to something more meaningful for you. 
 

Note:  

If you cannot download the module web page, it may be that the 

address of your network interface adapter is not set to a valid IP address 
within the module’s default address domain.  Refer to Applications Note 
8500-734 for information on how to accomplish this.

WEB BROWSER 

 
Home Page 

Содержание Bus Works 900EN Series

Страница 1: ...derutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In s...

Страница 2: ...rade Model 989EN 4C16 16 CH DI O Commercial Grade USER S MANUAL ACROMAG INCORPORATED Tel 248 295 0880 30765 South Wixom Road Fax 248 624 9234 Wixom MI 48393 2417 U S A Email sales acromag com Web http...

Страница 3: ...ur Module 32 TECHNICAL REFERENCE KEY FEATURES 33 HOW IT WORKS 34 ABOUT MODBUS TCP IP 36 IP Addressing 38 Dynamic Host Configuration Protocol 39 Domain Name System DNS 40 MODBUS REGISTERS 40 Register F...

Страница 4: ...network Activity busy ISOLATION BARRIERS Dashed Lines denote isolation barriers The I O circuit network and power circuits are isolated from each other for safety and noise immunity 44 41 36 33 PWR NE...

Страница 5: ...OREMOVEITFROMRAIL When attaching the module to the T type DIN rail angle the top of the unit towards the rail and locate the top groove of the adapter over the upper lip of the rail Firmly push the un...

Страница 6: ...xcept for 128 1 1 100 which is the default address of the 989EN itself Once you are able to address the unit at its default address you can then reconfigure its IP address setting to an address more m...

Страница 7: ...use MJS1 CONNECTIONS Network Power Note Current draw figures do not include excitation current Voltage Current Typ Current Max 18 VDC 66 mA 73 mA 24 VDC 49 mA 54 mA 36 VDC 33 mA 37 mA X 5 X 4 X 2 X 1...

Страница 8: ...er to drive inputs externally To drive the inputs from an external source you must turn the corresponding outputs OFF or the output channel will be in contention with your external input signal IMPORT...

Страница 9: ...OSSES4VTHRESHOLD THEN RETURNSTO2mACONTINUOUS I N O N C RTN I O INT PULL UP 5 5V MIN EXC EXT EXC EXT PULL DOWN MAY BE REQUIRED FOR SOME APPLICATIONS OPEN LOAD CURRENT TANDEM OUTPUT MOSFET ISOFF PORT IN...

Страница 10: ...n voltages below 8V They will also vary slightly with the number of channels turned ON Use external excitation equal to or above 8V to properly regulate this current to 2mA 16mA V ON _ RTN EXC CNT Gen...

Страница 11: ...SHIELDED CABLE Note Counters will auto restore count values from non volatile memory after a power loss This option can be disabled through the webpage or via Modbus if desired I EXT EXC RTN EXC N O...

Страница 12: ...ve loads You should add external protection near the inductive load to prevent these transients from being sent along the connection wires Place a diode 1N4006 or equivalent across an inductive load w...

Страница 13: ...N IS8VTO 31VMAX Digital Counter Alarm Outputs 989EN 4016 Only Each of the eight counter channels on the 989EN 4016 has a corresponding Alarm Output 8 Channels These counters can be set to toggle the o...

Страница 14: ...with the output in the OFF state This opposes the input wetting current pull up so inputs must be tri stated for this to work You may wish to reconsider enabling this detection if you happen to be dr...

Страница 15: ...that shown below The Home Page provides buttons to access the other web pages of this module that are used to configure the network parameters change the user name and password and operate the module...

Страница 16: ...s noted on the previous page unit assumes IP address 128 1 1 100 thus allowing you to re invoke the Password Configuration Page and change the username and password as required Use up to 20 alphanumer...

Страница 17: ...r to product side label NOTE In order to network your PC with an Acromag module you may have to consult with your network administrator and either temporarily change your TCP IP configuration see TCP...

Страница 18: ...IP Address of the gateway if your local area network happens to be isolated by a gateway Typically it is assigned the first host address in the subnet If a gateway is not present then this field shou...

Страница 19: ...firm identification Refer to the Technical Reference section of this manual to learn more about IP Addressing terms and concepts Note The 989EN is equipped with one I O Port of 16 channels and configu...

Страница 20: ...er dissipation in the contact High currents through these switches can produce an IR voltage that can cause the input signal to rise back above the 4 0V threshold Thus you should select 2mA for those...

Страница 21: ...pon watchdog timeout you can direct the unit to set its outputs to this pre defined state with Take Action also selected or do nothing to the outputs with No Action selected You must enter four hex di...

Страница 22: ...either as a thermal fault or over voltage fault You can elect to keep the output shut down if auto refresh is also OFF or automatically retry its control following a shutdown If the fault has been re...

Страница 23: ...red for ON below the channel number Simply click the white control button below the LED to toggle the corresponding channel ON or OFF as required You can speed up or slow down the polling rate of the...

Страница 24: ...oll to the bottom of the page and click submit Input Counter Default OFF Certain inputs may be used as event counters for signals up to 150 Hz channels 0 7 Excitation must be connected and be 8V or ab...

Страница 25: ...counting on the selected enabled counter Note When counters are first enabled counters are automatically started Stop Counter Button This button will stop the counting on the selected enabled counter...

Страница 26: ...arms write 00FFH to register 40015 6 To configure the counters for Rollover alarms write 0000H to register 40014 7 Set the Pre Load Value by writing 0010H to registers 40016 40031 Problem Configure al...

Страница 27: ...erate them This page allows you to monitor counter values view alarm status and reset counters The Counter Boxes display the current value for each channel The value Inactive means that the counter on...

Страница 28: ...allows you to verify I O operation without actually wiring to the I O self test control Also included on the Page is an export configuration tool which allows you to copy the configuration of this mo...

Страница 29: ...your I O configuration to it is assumed that you have already communicated with it and setup its network parameters Click the Export Configuration button to transmit your I O configuration With refer...

Страница 30: ...he power terminals Return unit for repair Power should be fused externally or current limited to a safe operating level no less than twice the maximum input current Input Wetting Currents are Low or N...

Страница 31: ...not operable without proper excitation or with the inputs tri stated Connect an excitation voltage or pull the input signal up above the 4 3V maximum input threshold as required Unit Fails I O Self Te...

Страница 32: ...ield wiring to see if operation is restored Output TVS has failed Note The TVS working voltage limit is 31V Outputs include transient voltage suppressors that will squelch over voltage of short durati...

Страница 33: ...u can try restoring its initial configuration by following this procedure Procedure For Restoring any 989EN Unit to its Initial Configuration IMPORTANT Before reading on please follow the default mode...

Страница 34: ...nce and other mechanical effects Counter Alarm Output Counters can be set to output upon rollover condition The output will toggle state and reset either upon next event count momentary alarm or from...

Страница 35: ...urn from an operation in a timely manner Wide Range DC Power Wide range diode coupled power for use with redundant supplies and or battery back up Hardened For Harsh Environments For protection from R...

Страница 36: ...EL OUTPUT CONTROLLER THE ENCLOSURE IS COMMON TO EARTH GROUND EARTH GROUND IS ISOLATED 989ENSIMPLIFIEDSCHEMATIC THERE ARE SIXTEEN DIGITAL I O CHANNELS AND FOUR RTN TERMINALS ALL PORTS SHARE COMMON RETU...

Страница 37: ...pendent of an underlying physical layer The transport layer resides just below this application layer and is responsible for the transmission reception and error checking of the data While there are a...

Страница 38: ...for routing the packets to the network There are many network layer protocols such as ICMP IGMP ARP RARP but our focus here is on IP An IP packet is a chunk of data transferred over the Internet using...

Страница 39: ...es normally operate as network slaves information servers and do not initiate transactions on their own A host is used to refer to any device on any network On TCP IP networks each host has one or mor...

Страница 40: ...sk that correspond to the sub network address are all set to 1 s it would also work if the bits were set exactly as in the network address It s called a mask because it can be used to identify the uni...

Страница 41: ...CPU to an output channel Note The ON OFF state of discrete inputs and outputs is represented by a 1 or 0 value assigned to an individual bit in a 16 bit data word port This is sixteen 0x or 1x referen...

Страница 42: ...s specification for a complete list of possible error codes 989EN 4016 Report Slave ID Example Response1 FIELD DESCRIPTION Unit ID Echo Unit ID Sent In Query Function Code 11 Byte Count 43 Slave ID Mo...

Страница 43: ...e Register function with an address offset of 42000 Setting the data to 0000H will turn the coil OFF while setting the data to FF00H will turn the coil ON Writing to multiple coils is not supported vi...

Страница 44: ...nel output mosfet Thus a read of this register may not reflect the actual output level at the drain of the mosfet for certain conditions You can read the Contact Registers to obtain the actual output...

Страница 45: ...the faulted output s will shut down if a fault flag is set not the entire port If excitation over voltage is tripped all channels are shutdown Open load detection does not shut down the output 30003...

Страница 46: ...n for CH 0 above but apply to CH 3 30011 10 000A CH 3 Input Count Low Value LSW See explanation for CH 0 above but apply to CH 3 30012 11 000B CH 4 Input Count High Value MSW See explanation for CH 0...

Страница 47: ...but apply to CH 1 30023 22 0016 CH 2 Input Count Timer Value See explanation for CH 0 above but apply to CH 2 30024 23 0017 CH 3 Input Count Timer Value See explanation for CH 0 above but apply to CH...

Страница 48: ...to 2mA continuous Note The 16mA wetting current selection is subject to a built in timer which will automatically change the wetting current back to 2mA 20ms after the input crosses the 4V threshold 4...

Страница 49: ...an external series fuse Fast fault protection is not reflected in the I O Error Status bits Def FFFFH Enable Fast Data Format 16 bit Unsigned Integer Outputs already have built in current limiting and...

Страница 50: ...gned Integer The bits of this 16 bit register value define the state that the output channels of Port 1 upon power up Bit 0 corresponds to channel 0 lsb bit 1 to channel 1 and so on 40010 09 0009 CH 0...

Страница 51: ...ast Count 1 Pre Load Bit 2 0 Last Count 1 Pre Load Bit 1 0 Last Count 1 Pre Load Bit 0 0 Last Count 1 Pre Load 40012 11 000B Edge Detection Def 0000H Negative Edge Data Format 16 bit Unsigned Integer...

Страница 52: ...ts 15 8 Not Used Bit 7 0 Disabled 1 Enabled Bit 6 0 Disabled 1 Enabled Bit 5 0 Disabled 1 Enabled Bit 4 0 Disabled 1 Enabled Bit 3 0 Disabled 1 Enabled Bit 2 0 Disabled 1 Enabled Bit 1 0 Disabled 1 En...

Страница 53: ...n for counter 0 above but apply to counter 5 40028 27 001B Counter 6 Pre Load High Value See explanation for counter 0 above but apply to counter 6 40029 28 001C Counter 6 Pre Load Low Value See expla...

Страница 54: ...0 lsb bit 1 to channel 1 and so on Note Timer Limit Value is applied to ALL channels with counters enabled 40036 35 0023 Reserved Reserved Do Not Use 40037 36 0024 Reserved Reserved Do Not Use 40038 3...

Страница 55: ...ts of the module may be independently reset with this command does not reset the inputs or controller This is useful for trouble shooting Writing FFFFH to this register all bits set will trigger a res...

Страница 56: ...Bit 0 0 Don t Stop 1 Stop 40045 42 002C Counter Reset Data Format 16 bit Unsigned Integer The lower byte of this 16 bit register bits 7 0 enables reset of counters channels 7 0 respectively This regi...

Страница 57: ...wetting current helps facilitate an I O self test without actual wiring IMPORTANT Inputs and outputs will not operate without port excitation External port excitation of 8 31V is required 40mA minimu...

Страница 58: ...stated inputs Input Thermal Limiting With multiple switch inputs closed high ambient and many wetting currents set to 16mA there is a small potential for excessive input port power dissipation When di...

Страница 59: ...and Return terminals and must be a DC voltage from 8 to 28V DC Inputs and outputs will not operate without excitation The excitation input includes transient protection and filtering plus a series co...

Страница 60: ...without resetting the system By default this is turned OFF and it is recommended to be turned OFF to improve counter performance if you are using counters Turning output refresh OFF allows outputs tha...

Страница 61: ...torage Temperature 989EN 4016 40 C to 85 C 40 F to 185 F Storage Temperature 989EN 4C16 0 C to 70 C 32 F to 158 F Relative Humidity 5 to 95 non condensing Power Requirements 18 36V DC SELV Safety Extr...

Страница 62: ...ons within Canada and in accordance with the authority having jurisdiction This equipment is suitable for use in Class I Division 2 Groups A B C and D or non hazardous locations only Model 989EN 4016...

Страница 63: ...N if auto negotiation has successfully established a connection ACT Orange Indicates current activity on the Ethernet port ON if data is being transmitted or received Controls Default Address Switch T...

Страница 64: ..._________________________________ Acromag Inc Tel 248 295 0880 Fax 248 624 9234 Email sales acromag com http www acromag com 63 There are two types of cable solid cable and stranded cable Stranded cab...

Страница 65: ...hanced protection from ESD Electro Static Discharge Further Acromag recommends the use of enhanced Category 5 cable CAT 5e This cable has all the characteristics of Category 5 but includes enhancement...

Страница 66: ...lded plug model 1003B 8P8CSR C5 Complete premium double shielded Category 5e standard and crossover cables in variable lengths can be obtained from Lumberg at www lumbergusa com refer to their etherMa...

Страница 67: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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