Precision Digital Corporation ProtEX-MAX PD8-6210 Instruction Manual Download Page 68

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ProtEX-MAX PD8-6210 Explosion-Proof Analog Input Batch Controller

Instruction Manual

Factory Defaults & User Settings

Parameter

Display

Default Setting

F3 function key

Stop

F4 function

Start/Stop

Digital input 1

dI 1

Digital input 2

dI 2

Right arrow

Digital input 3

dI 3

Up arrow

Digital input 4

dI 4

Enter

Digital output 1-4

dO 1

Alarm 1-4

Password 1

Pass 1

000000 (unlocked)

Password 2

Pass 2

000000 (unlocked)

Password 3

Pass 3

000000 (unlocked)

Total password

Total

000000 (unlocked)

Grand total
password

Gtotal

000000 (unlocked)

Summary of Contents for ProtEX-MAX PD8-6210

Page 1: ...Front Panel Buttons Display Batch Total Rate Grand Total Count or Preset Single or Multi Stage Batch Control Up to 4 Relays Front Panel or Remote Total Reset Automatic Overrun Correction Automatic or Manual Batch Control Low or High Flow Alarms while Batching 32 Point Linearization Square Root Extraction and Programmable Exponent Function Operating Temperature Range 40 to 60 C 40 to 140 F FM Appro...

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Page 3: ... complete details Registered Trademarks All trademarks mentioned in this document are the property of their respective owners 2022 Precision Digital Corporation All rights reserved FREE MeterView Pro Programming Software The controller can be powered from the USB connection When using the USB connection DO NOT apply AC or DC power to the controller The easiest and quickest way to program your Prot...

Page 4: ...tion P P 26 Connections 26 Required Factory Wired Connection 26 PROVU Electronics Module Layout 27 USB Connection 27 Power Connections 28 Signal Connections 29 Relay Connections 29 Interlock Relay Feature 29 Switching Inductive Loads 30 RS 485 Connections 30 RS 485 Multi Drop Connection 30 F4 Digital Input Connections 31 4 20 mA Output Connections 31 Analog Output Transmitter Power Supply 32 Remot...

Page 5: ...et Menu reset 51 Manual Control Menu Contrl 51 Setting Up the Password pass 52 Protecting or Locking the Controller 52 Grand Total Reset Password Non Resettable Total 52 Making Changes to a Password Protected Controller 52 Disabling Password Protection 52 Controller Operation 53 Button Operation 53 SafeTouch Buttons 53 Default Batch Control Operation 53 Batch Control Operation Example 54 Manual Ba...

Page 6: ...wer Connections 28 Figure 12 Transmitter Powered by Internal Supply 29 Figure 13 Transmitter Powered by Ext Supply or Self Powered 29 Figure 14 Voltage Input Connections 29 Figure 15 Relay Connections 29 Figure 28 Interlock Connection 29 Figure 16 AC and DC Loads Protection 30 Figure 17 Low Voltage DC Loads Protection 30 Figure 15 RS 485 Diagnostic LEDs 30 Figure 22 Three Wire RS 485 Connection 30...

Page 7: ... accuracy over time as systems wear out The overrun correction feature is capable of compensating for inaccuracies of up to 1 of the programmed preset value The controller accepts current and voltage signals e g 4 20 mA 0 10 V The PD8 6210 batch controller comes with four SPDT relays a 4 20 mA output two 24 VDC power supplies five digital inputs and four digital outputs and RS 485 serial communica...

Page 8: ...orial Learn how the PROVU s function keys increase the utility of the PROVU https www predig com videos WMBYKlavW Q Connect a PROVU to a PC Using MeterView Pro Learn how easy it is to use MeterView Pro software https www predig com videos PC_Connect MeterView Pro USB Programming Software Learn how easy it is to program a PROVU PD6000 process meter https www predig com videos MVPro_SW ProtEX MAX Ex...

Page 9: ...rts the batch The BATCH button shows the preset value The STOP button pauses or stops the batch The PD8 6210 is approved as a complete product by FM and CSA and also carries ATEX and IECEx certification One of the more convenient features of the PD8 6210 is its through glass SafeTouch buttons which allow the controller to be operated without removing its cover Just put your finger on the glass ove...

Page 10: ...addition to programming the software will also allow you to monitor and datalog a ProtEX MAX using your PC You can also generate and save programming files for later use Advanced Display Features Display What You Want The most common setup for these batch controllers is to display the batch total on the main display and batch preset on the second display This allows the user to monitor the batch a...

Page 11: ...se deactivates the relay before the batch is finished to allow slower fill rates and a more accurate batch finish Each additional stage batching relay has an individually programmable preclose amount Single Stage Batch Control Multi Stage Batch Control Quick Preset Changes The front panel BATCH key is configured by default to access the preset menu The preset may be changed quickly and easily betw...

Page 12: ...n be programmed and operated without removing the cover and exposing the electronics in a hazardous area These buttons can be disabled for security by selecting the DISABLE setting on the NO CONTACT BUTTONS switch located on the back of the electronics module inside the enclosure Rugged Heavy Duty Enclosure The ProtEX MAX is housed in a rugged NEMA 4X 7 9 IP68 die cast aluminum enclosure designed ...

Page 13: ... custom text for equipment identification instruction or whatever else is needed in your facility Each tag comes with a stainless steel wire and lead seal for easy mounting wherever you need it Removable Screw Terminals Industrial applications require screw terminal connections for easy field wiring and the ProtEX MAX goes one step further in convenience by making them removable also USB Port Mete...

Page 14: ...from DC power 24 V 25 mA To use an external power supply instead of the internal power supply simply make connections to different terminals on the ProtEX MAX The following diagram illustrates how to wire the ProtEX MAX so it will power the transmitter Controller Powers 4 20 mA Output Not only can the ProtEX MAX power the 4 20 mA input signal but an additional power supply of 24 V 25 mA is provide...

Page 15: ...easurement and output functions including voltage current thermocouple and RTD PD9502 Low Cost Signal Generator The PD9502 is a low cost compact simple to use 4 20 mA or 0 10 VDC signal generator It can easily be set for 0 20 mA 4 20 mA 0 10 V or 2 10 V ranges Signal adjustment is made with a one turn knob A 15 27 VDC wall plug is provided with the instrument Optional USB power bank is available ...

Page 16: ...rd Three programmable passwords restrict modification of programmed settings and two prevent resetting the totals Pass 1 Allows use of function keys and digital inputs Pass 2 Allows use of function keys digital inputs and editing set reset points Pass 3 Restricts all programming function keys and digital inputs Total Password Prevents resetting the total manually Gtotal Password Prevents resetting...

Page 17: ...iplier to display total in engineering units Time base must be selected according to the time units in which the rate is displayed Time Base Second minute hour or day Batch Control Mode Automatic or manual batch control Manual Batch The operator must press the START button every time a new batch is started Press STOP to pause the batch and either press START to resume or STOP to stop the incomplet...

Page 18: ...tal Reset Via front panel button external contact closure on digital inputs automatically via user selectable preset value and time delay or through serial communications Grand Total Reset Password Grand total passwords may be entered to prevent resetting the grand total from the front panel Non Resettable Grand Total The grand total can be programmed as a non resettable total by entering the pass...

Page 19: ... When power is applied to the controller relays will reflect the state of the input to the controller 1 1 Alarms are active only when the batch is running USB Connection Function Programming only Compatibility USB 2 0 Standard Compliant Connector Type Micro B receptacle Cable USB A Male to Micro B Cable Driver Microsoft Windows XP Vista 7 8 10 Power USB port provides power to the controller for co...

Page 20: ...Low 0 to 1 25 VDC Digital Output Logic High 3 1 to 3 3 VDC Digital Output Logic Low 0 to 0 4 VDC Source Current 10 mA maximum output current Sink Current 1 5 mA minimum input current 5 V Terminal To be used as pull up for digital inputs only Connect normally open push buttons across 5 V DI 1 4 DO NOT use 5 V terminal to power external devices MeterView Pro Software Availability Download directly f...

Page 21: ...IIC Gb T5 T6 Zone 21 AEx tb IIIC T90 C Ta 40 C to 65 C T6 Ta 40 C to 60 C T5 Ta 40 C to 65 C Certificate Number 3047283 CSA Class I Division 1 Groups B C D Class II Division 1 Groups E F G Class III Division 1 Class I Zone 1 Ex d IIC Zone 21 Ex tb IIIC T90 C 40 C Tamb 60 C Temperature Code T6 40 C Tamb 65 C Temperature Code T5 Enclosure Type 4X IP68 Certificate Number 2531731 ATEX II 2 G D Ex d II...

Page 22: ... opening the enclosure To access electrical connectors remove the 2 captive screws and then remove the electronics module Connectors are on the rear of the electronics module Unpacking Remove the controller from box Inspect the packaging and contents for damage Report damages if any to the carrier If any part is missing or the controller malfunctions please contact your supplier or the factory for...

Page 23: ...nting holes located in the cast in flanges In addition the internal electronic assembly can be rotated to allow the enclosure to be mounted in any position To mount the controller to a wall follow these instructions Prepare a section of wall approximately 7 x 8 5 178 mm x 216 mm for controller mounting by marking with a pencil the mounting holes shown in Figure 1 on the wall Select the appropriate...

Page 24: ... kit This kit includes two U bolts the necessary hardware and is available in zinc plated steel PDA6848 and 316 stainless steel PDA6848 SS To mount the controller using a U Bolt kit follow these instructions Orient the groove on the back of the instrument with the pipe and secure it to the pipe with the two U bolts and hardware provided Vertical Pipe Mounting Horizontal Pipe Mounting ...

Page 25: ...terView Pro Installation 1 Connect one end of the provided USB cable to the controller and the other end to the computer The computer will automatically install the driver software it needs to talk to the controller Follow the on screen instructions and allow sufficient time for the process to complete This can take a few minutes If the process is interrupted then it could leave the system in an u...

Page 26: ...e national state and local codes to prevent damage to the controller and ensure personnel safety Static electricity can damage sensitive components Observe safe handling precautions for static sensitive components Use proper grounding procedures codes If the instrument is installed in a high voltage environment and a fault or installation error occurs high voltage may be present on any lead or ter...

Page 27: ... 6H7 and PD8 6210 7H7 Figure 5 PROVU Electronics Module Layout USB Connection Figure 6 USB Connection DO NOT disconnect the RJ45 M LINK connector cable Otherwise the instrument will not function properly When using the USB connection the controller should only be connected to a computer when both devices are in a non hazardous area ...

Page 28: ... connector labeled POWER The controller will operate regardless of DC polarity connection The and symbols are only a suggested wiring convention There are separate models for low voltage and high voltage power See Ordering Information on page 7 for details Figure 7 Power Connections AC or DC POWER Required External Fuse 5 A max 250 V Slow Blow POWER ...

Page 29: ...s labeled RELAY1 RELAY4 Each relay s C terminal is common only to the normally open NO and normally closed NC contacts of the corresponding relay The relays C terminals should not be confused with the COM common terminal of the INPUT SIGNAL connector Figure 11 Relay Connections Interlock Relay Feature As the name implies the interlock relay feature reassigns one or more alarm control relays for us...

Page 30: ...ote Relays are de rated to 1 14th HP 50 watts with an inductive load RS 485 Connections The RS 485 connections are made to a five terminal connector used for Modbus RTU serial communications The RS 485 terminals include Transmit Data DO and DO Receive Data DI and DI and Signal Ground See Modbus RTU Serial Communications serial on page 61 for more information There are three diagnostic LEDs Transmi...

Page 31: ...ng digital input to match DO NOT disconnect the RJ45 M LINK connector cable Otherwise the instrument will not function properly F4 Digital Input Connections A digital input F4 is standard on the controller This digital input should be connected with a normally open contact across F4 and COM or with an active low signal applied to F4 It can be used to start stop the batch reset the total acknowledg...

Page 32: ...he analog output is not used The I terminal is the 24 V and the R terminal is the return Figure 20 Analog Output Supply Powering Other Devices Remote Programming The controller can be operated via the programming buttons or a remote control station with required approvals to be located in a hazardous area using the digital inputs Control station must be approved for hazardous locations R I I 1 3 2...

Page 33: ...p and programming is done using MeterView Pro or through the programming buttons After power and input signal connections have been completed and verified apply power to the controller LED Status Indicators LED State Indication 1 4 Steady Alarm condition based on set and reset points independent of relay status in certain configurations 1 4 Flashing Relay interlock switch open 1 4 M Flashing Relay...

Page 34: ... board To actuate a button press one finger to the glass directly over the marked button area Then retract finger more than three inches from the glass before pressing the next button When the cover is removed the four mechanical buttons located next to the sensors are used The sensors are disabled when a mechanical button is pressed and will automatically be re enabled after 60 seconds of inactiv...

Page 35: ...ch control T dly Time delay Set time delay for automatic batch restart GT tb Grand total time base Program grand total time base Display Functions and Messages Display Parameter Action Setting Description GT CF Grand total conversion factor Program grand total conversion factor GT rst Grand total reset Program grand total reset mode auto or manual dsplay Display Enter the Display menu Line 1 Displ...

Page 36: ...s Enter to access the Reset menu Rst Hi Reset high Press Enter to reset max display Rst Lo Reset low Press Enter to reset min display Rst HL Reset high low Press Enter to reset max min displays Rst t Reset total Press Enter to reset total Rst Gt Reset grand total Press Enter to reset grand total Rst bc Reset batch count Press Enter to reset batch count Display Functions and Messages Display Parame...

Page 37: ...ht and Up arrow buttons Press Right arrow to select next digit and Up arrow to increment digit value The digit being changed is displayed brighter than the rest Press and hold up arrow to auto increment the display value Press the Enter button at any time to accept a setting or Menu button to exit without saving changes Setting Up the Batch Controller setup The Setup menu is used to select 1 Input...

Page 38: ...put Units or Custom Tags units Enter the input unit or custom tag that will be displayed if alternating rate total or grand total and units is selected in the units menu or d unit is selected as the Second display parameter See the Setting the Display Parameter Intensity dsplay flow chart on page 42 to access the display menu to show the unit or tag on the second display The engineering units or c...

Page 39: ...at a time The Scale and Calibrate functions can use up to 32 points default is 2 The number of points should be set in the Advanced menu prior to scaling and calibration of the controller See Multi Point Linearization Linear menu on page 62 for details Additional parameters not needed for most applications are programmed in the Advanced Features menu see Advanced Setup Programming on page 59 Input...

Page 40: ...bration or scaling of the controller Input range Input 1 input 2 span 4 20 mA 0 15 mA 10 VDC 0 10 VDC Time Base Total Conversion Factor Total Reset The time base total conversion factor and total reset menus are located in the Program menu The total and grand total have their own independent settings This means that one can be displaying the value in gallons while the other displays in million gal...

Page 41: ...ammed for manual or automatic reset In the automatic reset mode a programmable time delay is available to reset the grand total after the assigned preset is reached The totals can also be reset via the front panel button via a switch across the F4 terminal digital inputs or via a Modbus command Non Resettable Totalizer The grand total can be programmed as a non resettable total see Grand Total Res...

Page 42: ... Toggle preset and rate After setting up the input and the display press the Menu button to exit programming and skip the rest of the setup menu Press the Menu button again and the Up arrow to reach the Program menu and complete the scaling or calibration of the controller Display Menu Display Intensity d Inty The controller has eight display intensity levels to give the best performance under var...

Page 43: ... with Clear manual reset when not in a batch process only after alarm condition has cleared e Pump alternation control Not applicable to batch control f Sampling the relay is activated for a user specified time and may be assigned to rate or grand total g Off relay state can be controlled by Interlock feature 3 Set and reset points batch preset 4 Fail safe operation a On enabled b Off disabled 5 T...

Page 44: ...l 44 Relay Assignment Assign The relays can be assigned to any of the following parameters 1 Rate for low or high alarm indication 2 Total for batch control relays 3 Grand total for alarm indication or sampling Relay 1 should always be assigned to total for batch control applications ...

Page 45: ...lay set to total Programming Alarm Set and Reset Points High alarm program set point above reset point Low alarm program set point below reset point The deadband is determined by the difference between set and reset points Minimum deadband is one display count If the set and reset points are programmed with the same value the relay will reset one count below the set point Note Changes are not save...

Page 46: ...ensing is activated Each relay can be programmed with additional ON delay to satisfy various conditions and applications 1 START button is pressed 2 Both relays are energized opening both valves controlling the flow 3 At 50 gallons pre close 5 gal relay 2 closes the main valve 4 At 55 gallons preset 55 gal relay 1 closes the dribble valve 5 After the Batch Time Delay elapses a new batch starts aut...

Page 47: ...ignal must go below the set point and then go above it Low Alarm Operation Set Reset For Manual reset mode ACK can be pressed anytime to turn off relay To detect a new alarm condition the signal must go below the set point and then go above it High Alarm with Fail Safe Operation Set Reset Note Relay coil is energized in non alarm condition In case of power failure relay will go to alarm state Low ...

Page 48: ...as elapsed the On time delay timer resets and the relay does not change state The same principle applies to the Off time delay Note If Automatic or Manual A nmAn reset mode is selected the LED follows the reset point and not the relay state when the relay is acknowledged Total Relay Sampling Operation When the total reaches the preset the relay trips and the sample time starts After the sample tim...

Page 49: ...tion Non Alarm State Alarm State Power Failure NO NC NO NC Off Open Closed Closed Open Relays in de energized state On Closed Open Open Closed Relays in energized state Note NO Normally Open NC Normally Closed This refers to the condition of the relay contacts when the power to the controller is off Front Panel LEDs The alarm status LEDs on the front panel are available on all controllers and prov...

Page 50: ...lays To set up the relays for the interlock feature 1 Access the Setup Relay Action menu and set the action to off 2 In the Advanced features User menu program any of the digital inputs to Force On any of the internal relays 1 4 3 Connect a switch or dry contact between the 5 V terminal and the corresponding digital input dI 1 to dI 4 terminal Interlock Relay Operation Example Relays 3 4 are confi...

Page 51: ...details see Setting Numeric Values on page 37 Analog Output Value for Loss of 4 20 mA Input Loop Break on page 63 Reset Menu reset The Reset menu is used to reset the total grand totals batch count maximum or minimum reading peak or valley reached by the process both maximum and minimum may be reset at the same time by selecting reset high low rst HL Manual Control Menu Contrl The Manual Control m...

Page 52: ...nd Total has been programmed as non resettable the feature CANNOT be disabled Making Changes to a Password Protected Controller If the controller is password protected the controller will display the message Locd Locked when the Menu button is pressed Press the Enter button while the message is being displayed and enter the correct password to gain access the menu After exiting the programming mod...

Page 53: ...ser menu To learn more about SafeTouch buttons see this video predig com videos Safetouch_Buttons SafeTouch Buttons The ProtEX MAX is equipped with four sensors that operate as through glass buttons so that it can be programmed and operated without removing the cover and exposing the electronics in a hazardous area These buttons can be disabled for security by selecting DISABLE on the switch label...

Page 54: ...ill hold 80 gallons so the preset will be changed to 80 Two Stage Batch Control Setup Using Relays 1 2 The following table shows the parameters as they appear within the Setup menu entry relay Parameter Setting Function Relay Assign Press Enter to enter the relay assignment parameters Asign1 total Assign relay 1 to batch total control Asign2 total Assign relay 2 to batch total control Precls Total...

Page 55: ...isplayed in the main display the preset is selected for the second display 2 Batch Start The START button is pressed Both valves open The barrel begins to fill 3 Preclose Valve When the batch total reaches a value of 50 00 Preset 55 00 Pre close 5 00 the full flow valve closes The fill rate of the tank slows as a result 4 Completed Batch When the batch is complete the restricted flow valve closes ...

Page 56: ...e reset menu by pressing the MENU button and entering the reset menu It may also be reset with digital inputs Automatic Batch Control The automatic batch control feature is used for batch processes where the batch size does not change or the operator wants the next batch to start automatically after the previous batch is complete The following diagrams demonstrate a typical automatic batch operati...

Page 57: ...a value of 50 00 Preset 55 00 Pre close 5 00 the full flow valve closes The fill rate of the tank slows as a result 4 Completed Batch When the batch is complete the restricted flow valve closes If overrun occurs then the next batch will adjust for this offset amount to maintain accuracy 5 Replace Full Barrel with Empty Barrel After the batch is completed the operator removes the full barrel and pl...

Page 58: ...atch operation and set time delay if automatic mode Count Direction Program the batch controller to count up or count down and set a starting count value if desired Operate with MeterView Pro MeterView Pro software also shows the Batch Size and Current Batch Total as well as allowing the user to start and stop the batch Real Time Batch in Progress MeterView Pro software shows all the important bat...

Page 59: ...tures Menu Display Messages Display Parameter Action Setting SelEct Select Enter the Select menu function cutoff out Functn Input Signal Conditioning Select linear square root or programmable exponent Linear Linear Set controller for linear function and select number of linearization points No PtS Number of points Set controller for 2 to 32 point linearization Square Square root Set controller for...

Page 60: ...ration the programmable function keys operate according to the way they have been programmed in the Advanced Features User menu See Programmable Function Keys User Menu user on page 64 for details The following table shows the default setting for each of the function keys Function Key Button Default Setting Action F1 START Start Start batch F2 BATCH preset Change preset F3 STOP stop Pause stop bat...

Page 61: ...e Filter Bypass bypass The noise filter bypass changes the behavior of the controller so that small variations in the signal are filtered out but large abrupt changes in the input signal are displayed immediately The bypass value determines the minimum amount of signal change to be displayed immediately All signal changes smaller than the bypass value are filtered or averaged by the controller The...

Page 62: ...om level transmitters used to measure volume in odd shaped tanks or to convert level to flow using weirs and flumes with complex exponent Low Flow Cutoff CutofF The low flow cutoff feature allows the controller to be programmed so that the often unsteady output from a differential pressure transmitter at low flow rates always displays zero on the controller The cutoff can be disabled to display ne...

Page 63: ...used for scaling the 4 20 mA output in the Setup menu Analog Output Calibration Procedure 1 Wire the PD8 6210 4 20 mA output to a current loop that includes a power supply internal or external 12 to 24 VDC and the mA input on the digital meter See Figure 19 4 20 mA Output Connections on page 31 for details 2 Turn on all devices Allow for a 15 to 30 minute warm up 3 Go to the Advanced Features menu...

Page 64: ...ent display value relay states and analog output momentarily while the function key or digital input is active The process value will continue to be calculated in the background Ln1 Hi Display maximum display value on line 1 Ln1 Lo Display minimum display value on line 1 Ln1 HL Display maximum minimum display values on line 1 Ln2 Hi Display maximum display value on line 2 Ln2 Lo Display minimum di...

Page 65: ...s displayed with the leftmost digit brighter than the rest The bright digit is the active digit that can be changed by pressing the Up arrow button Press the Right arrow button to move to the next digit 6 Set the display value to correspond to the input signal being calibrated typically 4 000 mA 7 The display moves to the high input calibration C Hi Apply the high input signal and press Enter 8 Se...

Page 66: ...l digits decimal points and relay indicators to enable the operator to check that all LEDs are functioning properly 4 Press the Enter button again to access the Information menu Info or press the Menu button to return to Run Mode Determining Software Version To determine the software version of a controller 1 Go to the Diagnostics menu diAG and press Enter button 2 Press Up arrow button and scroll...

Page 67: ...tion Act 2 Automatic Relay 2 set point Set 2 200 0 Relay 3 action Act 3 Automatic Relay 3 set point Set 3 3 000 Relay 3 reset point RSt 3 2 500 Relay 4 action Act 4 Automatic Factory Defaults User Settings Parameter Display Default Setting Relay 4 set point Set 4 4 000 Relay 4 reset point RSt 4 3 500 Fail safe relay 1 Fls 1 Off Fail safe relay 2 Fls 2 Off Fail safe relay 3 Fls 3 Off Fail safe rela...

Page 68: ...y F3 Stop F4 function F4 Start Stop Digital input 1 dI 1 Menu Digital input 2 dI 2 Right arrow Digital input 3 dI 3 Up arrow Digital input 4 dI 4 Enter Digital output 1 4 dO 1 Alarm 1 4 Password 1 Pass 1 000000 unlocked Password 2 Pass 2 000000 unlocked Password 3 Pass 3 000000 unlocked Total password Total 000000 unlocked Grand total password Gtotal 000000 unlocked ...

Page 69: ...flow cutoff to a value greater than zero Controller displays error message during calibration Error Check 1 Signal connections 2 Input selected in Setup menu 3 Minimum input span requirements Controller displays 1 999999 2 99999 Check 1 Input selected in Setup menu 2 Corresponding signal at Signal connector Display is unstable Check 1 Input signal stability and value 2 Display scaling vs input sig...

Page 70: ...R LED Indicator is off Check 1 Modular cable connection 2 Power to the device If only the TX or DATA IN data status LED is flashing when serial communications attempted Check 1 Serial cable 2 Instrument address baud rate 3 Program address baud rate If both data status LEDs TX and RX are off when trying to communicate Remove all unnecessary cables and instruments from the bus Try getting the system...

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