Gould Modbus J347 Interface
Contents
1. When the 184 384 PC has processed the message a response is passed to the J347 interface If the message received was a broadcast the J347 does not send a response message to the MODBUS master A response message to a query is sent to the master device which performs error checking and validation of the message The J347 interface supports the standard MODBUS messages shown in Table 1 1 Table 1 1 MODBUS Messages Supported by J347 Interface Function Function Code Name Description Read Output Status Get status ON or OFF of logic coils from a Slave PC Read Input Status Get status ON or OFF of discrete inputs from a Slave PC Function Code 03 04 05 07 Function Name Read Holding Registers Read Input Registers Modify Coil Status Modify Register Content Read Exception Status Loop Back Diagnostic Test Description Get the contents in binary of holding registers from a slave PC Get the contents in binary of input registers from a slave PC Change the status ON or OFF of any coil in a slave PC This command overrides the slave PC s memory protect and disable coil features Change the binary content of any output or holding register in the slave PC Input register content may not be changed This command overrides the slave PC s memory protect feature Get the status ON or OFF of eight fixed logic coils from a slave PC User logic may be programm2. am lt m s GE m m lt ss ee eet s s h A LINE co me Y AE EE REE E EAE II ee EO GU GOULD PROGRAMMABLE CONTROL DIVISION PUBLICATIONS ORDER FORM Bill To Purchase Order No ___ Date Document Part Number Description PI MISC 004 Publications Catalog TO ORDER BY PHONE CALL 603 893 0400 and ask for an Order Entry Coordinator Ship To if different Customer Contact Name Telephone Quantity Unit Price Total Price 1 FREE Authorized Signature Ordering Instructions Date 1 Provide appropriate billing address and shipping address if different from billing address 2 Please provide a contact name and phone number in case we have a question about your order 3 Indicate your purchase order number and date You may prepay by enclosing a check for the full amount 4 Givethe part number description and quantity for each document ordered Sub Total Freight Total Delivery Unless otherwise specified all orders are shipped best way surface F O B Salem NH prepay and add if UPS surface collect for truck and air If you specify insurance you will be billed for these charges Gould will not assume any liability in connection with shipment nor shall the carrier be construed to be an agent of Gould Paymen
3. error See Section 5 for troubleshooting and error indication information 4 2 MODES OF OPERATION There are four modes or operational states that the J347 interface may enter Each mode may be identified using the indicator lights on the front of the unit The only mode that is specifically selected by the user is Test Mode The unit should otherwise be in On Line Mode indicating normal operation Halt Mode and Listen Only Mode indicate errors in the J347 interface or elsewhere in the MODBUS system The four modes may be described as follows On Line Mode The RUN light is on continuously This mode is entered during normal operation Test Mode This mode is used to test the internal operation of a J347 interface All four indicator lights flash in sequence indicating continuous diagnostic tests are running To enter this mode set switches 4 and 5 on the communications parameter switch package to ON switches up Halt Mode A fixed pattern of indicators flashes continuously indicating a diagnostic test failure This usually indicates that the J347 interface should be replaced See Section 5 for indicator light error patterns Listen Only Mode The Run light is off indicating a failure somewhere in the system The user should take one of the following steps 1 Send a software restart signal MODBUS function code 8 diagnostic code 01 2 Press the J347 interface reset button 3 Cycle power to the a
4. ODD PARITY NO PARITY e ASCII MODE O RTU MODE 184 PC 384 PC Figure 3 6 Sample Communication Parameter Switch Settings Setting Baud Rates 1 Select the baud rate according to Table 3 3 below There are four Switches Table 3 3 Baud Rate Switch Settings O OFF Switch Down 1 ON Switch Up Switch No 1 2 3 4 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 C OO O OO RPP PE OOP OPO P Pr OOHHOOKHHOOHHOOpKHk F O i O E O F OCF C R GO OF 3 1 3 Reset Once the J347 is on the switch package settings are read continuously There is no need to turn the power off and on or perform any other reset of the unit if the switch package settings are changed Any changes to switch setting however may prevent communication unless the rest of the network switch settings are in agreement CAUTION All switch settings should be checked if the J347 interface is moved from one controller to another Button the reset button is located behind the address switch package the topmost set of switches as shown in Figure 3 7 When the reset button is pressed the J347 interface goes through power up diagnostics see Section 5 The J347 interface counters event log and diagnostic register are also cleared when the reset button is pressed but the 184 384 PC is not effected RESET BUTTON BEHIND ADDRESS SWITCH PACKAGE Figure 3 7 Reset Button Location 3 1 4 Indicator Lights Four indicator lights
5. Division Gould Modicon assumes no responsibility for any errors that may appear in this document No part of this document may be reproduced in any form without the express written permission of Gould Modicon MODBUS is a registered trademark of Gould Modicon lst Edition June 1982 Copyright 1982 Gould Inc All Rights Reserved Table of Contents Page SECTION l INTRODUCTION SECTION 2 SYSTEM DESCRIPTION SECTION 3 PHYSICAL DESCRIPTION AND INSTALLATION 3 1 Switches and Controls nn 10 3 1 3 1 1 U P P Key Switch 2 3 2 3 1 2 Baud Rate Communication Parameter and Address Switch Packages 3 3 3 1 3 Reset Button eer ee 3 8 3 1 4 Indicator Lights lt lt 3 9 3 1 5 Connectors 3 9 3 2 Installation refer 3 10 3 2 1 Switch Settings 3 10 3 2 2 Connecting the J347 Interface J146 Interface and the 184 384 PC 3 10 3 2 3 Connecting the J347 Interface to a Modem nm ke ee 3 13 3 2 4 Connecting the J347 Interface Directly to a 184 384 PC 3 14 SECTION 4 OPERATION 4 1 General Operation err er tre 4 1 4 2 Modes of Operation 4 1 4 3 J347 Interface MODBUS Message Response Time lt Q 4 2 SECTION 5 MAINTENANCE A
6. be set to DISABLE unless a programming panel is being used Programming and MODBUS communications cannot take place at the same time To allow the use of a program panel 1 Turn the U P P key switch to the ENABLE position 2 The programming panel can now be used The J347 interface does not work as a MODBUS slave interface while the U P P key switch is in the ENABLE position To use the J347 interface after programming has been done 1 Turn the U P P key switch to the DISABLE position 2 The J347 interface will now work as a MODBUS slave interface Figure 3 2 shows the ENABLE and DISABLE positions of the U P P key switch UPP ENABLE a U P P ENABLE mr m OQ O mr m pQ O U PP KEY SWITCH U PP KEY SWITCH IN ENABLE POSITION IN DISABLE POSITION FOR PROGRAMMING FOR MODBUS OPERATION Figure 3 2 U P P Key Switch Positions 3 1 2 Baud Rate Communication Parameter and Address Switch Packages Switch packages for the selection of baud rate communication parameters and slave address are located behind the moveable faceplate covering the indicator lights To gain access to these switches 1 Loosen but do not remove the faceplate s top screw 2 Rotate the faceplate to the left 3 The switches are located directly behind the top three indicator lights Figure 3 3 shows the location of the switch packages and how the faceplate is moved D S A B L E
7. failed Not used ROM chip 1 test failed ROM chip 2 test failed ROM chip 3 test failed RAM chip 5000 53FF test failed RAM chip 6000 67FF test failed even addresses RAM chip 6000 67FF test failed odd addresses Not used Troubleshooting Table The following table lists types of failures possible causes and corrective action Table 5 2 Troubleshooting Table Possible Possible Cause Corrective Action Action Lights Communication indicate parameter switch continuous diagnostic package set for test mode opera test running tion switches 4 and 5 ON switch up Failed J347 U P P key switch set to ENABLE Incorrect or no response but RUN and ACTIVE lights do not indicate problem MODBUS master device sending broadcast messages Use of J347 Failed J347 causes PC RUN light to to out Incorrect J347 parameter settings ACTIVE lignt does not go on Cable not connected or incorrect cable used Failed J347 J347 is in LISTEN ONLY mode ACTIVE light is only light on blinking or steady Diagnostic test failed Check switch settings and reset switches to desired setting See Section 3251 28 Replace J347 Set U P P key switch to DISABLE using procedure im Section Felele No action necessary Broadcast messages are not responded to by slave devices Replace J347 Check switch packages for corr
8. in Figure 3 16 FRAME GROUND TRANSMIT 2 RECEIVE 3 REQUEST TOSEND 4 CLEAR TO SEND 5 DATA SET READY 6 DATA TERMINAL READY 20 SIGNAL GROUND 7 J347 DATA TERMINAL EQUIPMENT MODBUS MASTER Figure 3 16 Pin Out for Single Slave NOTE Point to Point Connection If the connector at the MODBUS master is a 25 pin Type D male connector a MODICON W364 cable can be used The only difference between the W364 cable pin out and the one shown above is that pins 6 20 and 8 Carrier Detect are jumpered together at both ends This should not affect signal transmission SECTION 4 OPERATION 4 1 GENERAL OPERATION Once the J347 interface is installed it begins operating as soon as power is applied to the 184 384 PC and the PC is turned on The J347 interface gets power directly from the 184 384 PC The J347 interface cannot be installed while the 184 384PC is running A complete set of diagnostic tests are performed when power is first received from the 184 384 PC when the 184 384 PC is restarted after being stopped when the J347 reset button is pressed the 184 384 PC is not reset It takes about 5 seconds for these tests to be run If the tests are performed successfully no errors found only the RUN indicator light comes on If other lights come on or no lights are lit this indicates that an error has been found At the same time the appropriate bit in an internal register is set to indicate an
9. tab in first then insert the lower tab See Figure 3 9 If no J146 interface is to be connected skip to Step 6 Also see CAUTION before Step 5 Turn the J347 locking knob counter clockwise until the access flap is free Fold the flap back so that is is flush with the J347 housing See Figure 3 10 Insert the mounting tabs on the back of the J146 into the J347 mounting flanges Hook the top tab in first then insert the lower tab See Figure 3 11 Mount J347 Interface on 184 384 PC Figure 3 9 Open J347 Interface Access Flap Figure 3 10 Sc J146 SN Mount J146 Interface on J347 Interface Figure 3 11 CAUTION In Steps 5 and 6 make sure that the two sets of D connectors are properly seated before tightening the locking knob Excessive force may result in damage to the connectors Engage J146 locking pin in the slot in the J347 locking knob Once the pin is in the slot turn the locking knob clockwise one half turn See Figure 3 12 Engage the J347 locking pin in the slot in the 184 384 PC locking knob Once the pin is in the slot turn the locking knob clockwise about one half turn to the OFF position See Figure 3 13 3 8 4 Figure 3 12 Connect J146 Interface to J347 Interface Figure 3 13 Connect J347 Interface to 184 384 PC The units should fit together as shown See Figure 3 14 Figure 3 14 Completed E Connection When
10. LOOSEN SCREW TO MOVE FACEPLATE ADDRESS SWITCH PAC pia ICATIO BAUD RATE SWITCH 184 384 PACKAGE ERROR ERROR O NOTE THE SWITCH PACKAGES ARE BEHIND THE INDICATOR LIGHTS Figure 3 3 Switch Package Access and Location The baud rate switch package allows the user to select a baud rate from 50 to 19 2K baud for MODBUS communications The baud rate selected must match the baud rate of the other slaves on the MODBUS system The communication parameter switch package allows the user to enable or disable parity and to select the following Number of stop bits one or two Even or odd parity Mode of transmission RTU or ASCII Type of PC 184 or 384 The stop bit parity and mode of transmission unless test mode is selected must match the other MODBUS slaves The address switch package allows the user to select the MODBUS slave address This address must be different from any other slave address in a given MODBUS communication System Figure 3 4 shows switch numbering Tables 3 1 through 3 3 give switch settings for the three switch packages 8 ADDRESS X COMMUNICATION PARAMETERS 4 T BAUD RATE Figure 3 4 Switch Numbering Setting an Address To set a MODBUS slave address 1 Choose a valid address from l to 247 for example 41 2 Convert the address to an 8 bit binary number Address 41 is 00101001 3 Enter the binary number on the address switch package zeros bein
11. ML J347 USE Rev A Gould Modbus J347 Interface USER S MANUAL GOULD Electronics SUBJECT Describes the installation and use of a J347 MODBUS Slave Interface including a physical description review of capabilities installation procedures electrical connections and troubleshooting information DATE June 1982 ENGR PART NO ML J347 USE LIT NO 40152 PREFACE This manual describes the installation and use of the J347 MODBUS Slave Interface This interface allows any model MODICON 184 or 384 PC to act as a slave device on a MODBUS communications system The manual provides a description of the J347 interface a review of capabilities installation procedures electrical connections and troubleshooting information In this manual J347 refers to the MODBUS Slave Interface The product designation J346 denotes a J347 interface a J478 MODBUS modem and a cable physically separate but packaged together Information on the MODBUS Industrial Communications System may be found in the following documents MODBUS Industrial Communications System Product Description MODBUS System Planning Guide MODBUS Host Software Description For information on specific system components modems interfaces etc see the appropriate user manuals The information in this document is subject to change without notice and should not be construed as a commitment by Gould Inc Modicon Programmable Control
12. ND TROUBLESHOOTING 5 1 Maintenance SSL ee SE 55 pe 5 1 5 2 Troubleshooting ee ere 5 1 5 2 1 Indicator Light Halt Patterns 5 1 5 2 2 Troubleshooting Table gt 5 2 FIGURES 2 1 Point to Point Single Slave Configuration 2 1 2 2 Daisy Chain Zero Length Drop Configuration Using J478 Modems 2 2 2 3 Multidrop Configuration Using J478 Modems 2 2 2 4 Multidrop Configuration Using Commercial Modems 2 2 3 1 J347 Interface Physical Features 3 1 3 2 U P P Key Switch Positions eer 3 2 3 3 Switch Package Access and Location 3 3 3 4 Switch Numbering 3 4 3 5 Sample Address Switch Settings 3 6 3 6 Sample Communication Parameter Switch Settings 3 7 lii Reset Button Location 3 8 Open 184 384 PC Access Flap eer er er ee ee 3 10 Mount J347 Interface on 184 384 PC 3 11 Open J347 Interface Access Flap 3 11 Mount J146 Interface on J347 Interface 3 11 Connect J146 Interface to J347 Interface 3 12 Connect J347 Interface to 184 384 PC 3 12 Completed Connection rt 3 13 Pin Out for AS W346 OXO Cable 3 14 Pin
13. Out for Single Slave Point to Point Connection 3 15 MODBUS Messages Supported by J347 Interface 1 1 J347 Interface Specifications l 4 Address Switch Settings 3 5 Communication Parameter Switch Settings 3 6 Baud Rate Switch Settings 3 7 Response TIMES Ars me am ne A A a ee re 4 3 Halt Patterns A A AAA AA 8 Se a 5 2 Troubleshooting Table gt 5 3 iv SECTION 1 INTRODUCTION The J347 MODBUS Slave Interface is a communications device which allows a 184 or 384 PC of any model to communicate over a MODBUS system network The MODBUS master device PC computer or intelligent terminal initiates communications on a MODBUS system The J347 interface simply listens for its slave address or for an address of zero indicating a broadcast message When the interface detects its own address or a zero the message will be processed Otherwise it will be read but disregarded The accepted message is checked for communications errors and invalid data If the message is correct and complete it is passed to the 184 384 PC The exceptions to this are messages which fetch counters held in the J347 interface If the message has errors or is invalid the interface either disposes of the message and waits for retransmission or in the case of certain errors sends an error response to the master device
14. Reset Button 3 8 Response Times 4 2 4 3 Specifications 1 4 Stop Bits See Communications Parameters Switch Packages 3 3 3 4 3 8 Test Mode 4 1 4 2 Troubleshooting 5 1 Universal Programming Panel U P P Key Switch 3 1 3 2 W346 Cable 3 13 3 14 184 384 PC 1 1 2 1 2 2 3 9 3 10 vem mp qa a wa m ES hy s u uu u m m u CU T ALONG LI N E pawan E as an an un A mn up ap ua aa am an ua O a an wp Us Oe up u un an am un aaa a up ap wa aa uwa ap UU wa wa mus an an aa oa un um an am un ap aa a ua ap an up am ap aa ua wa aaa an an qa wa an ma am unus SE se Se an IO GOULD PROGRAMMABLE CONTROL DIVISION PUBLICATIONS COMMENT FORM Document Part Number ML J347 USE Title Modbus J347 Interface Users Manual We are constantly striving to improve the content and usability of our technical documents You can help us by answering the questions below and mailing this form to us Also if you find any errors or have any suggestions for improvement please let us know How do you use this document LJ Introduction to the product CJ Operating instructions O Refer O Classroom resource ee 3 Other O Setf study O Programming procedures LJ Advanced programming techniques How did you get this document L Received with equipment C Ordered from Gould PC Division Received from Sales or Customer O Do not know Service Representative O Other Please rate this document Very Excellent Good Good Fair Poo
15. ace A single female 25 pin D connector for connection to a modem located on the underside of the interface A pair of male edge connectors blue ribbon for connection to a J146 programming panel interface located on the left side of the J347 interface under an access flap Figure 3 1 shows the location of these connectors 3 2 3 2 3 2 INSTALLATION The basic J347 interface installation steps are as follows Set baud rate communication parameter and address switches Connect J146 programming panel interface to J347 interface if necessary Connect J347 interface to 384 PC Connect J347 interface to modem by cable or connect to MODBUS master directly in single slave point to point configuration 1 Switch Settings Refer to Section 3 1 2 for switch setting instructions Select the proper settings for the baud rate communication parameter and address switch packages 2 Connecting the J347 Interface J146 Interface and the 184 384 PC Figures 3 8 through 3 14 show connection of the J347 interface to a Jl46 programming panel interface and to a 184 384 PC Turn 184 384 PC locking knob counter clockwise to OPEN This frees the access flap Fold the flap back so that it is lush with the PC housing See Figure CLOSED OPEN 3 8 Figure 3 8 Open 184 384 PC Access Flap Insert the mounting tabs on the back of the J347 into the 184 384 PC mounting flanges Hook the top
16. are located behind the faceplate on the front of the J347 interface They are labeled RUN ACTIVE 184 384 ERROR and BUS ERROR The indicator lights serve two purposes they indicate the operational status of the unit and if an error occurs when the unit is powered up they flash a specific error pattern See Section 5 Troubleshooting for the definition of error patterns In an operational J347 interface the indicator lights will function as follows RUN On at all times during normal operation Indicates that power up diagnostic routines have been completed successfully This takes approximately five seconds This is the only light that should be on directly after power up diagnostics have been run ACTIVE On when interface receives a MODBUS message with its address a query message or an address of zero a broadcast message The light is turned off when the request is completed and a response is returned or no response in the case of a broadcast message 184 384 ERROR Flashed once for each error in communications between the 184 384 PC and the J347 interface BUS ERROR On when an error is detected in a MODBUS message received by the J347 interface It stays on until a correct MODBUS message is received 3 1 5 Connectors There are three sets of connectors on a J347 interface A pair of female edge connectors blue ribbon for connection to the 184 384 PC located on the right side of the J347 interf
17. ect settings See Section 3 1 2 Check cable seating and check cable part number Replace J347 Send software restart using MODBUS protocol function code 8 diagnostic code 1 Press J347 reset button Cycle power to PC this resets the PC Replace J347 Possible Cause Corrective Action Falled J347 Send software restart using MODBUS protocol function code 8 J347 indicator lights flasn ing pattern RUN light diagnostic code 1 not on con tinuously or press J347 reset button OL Cycle power to PC this resets the PC If pattern persists check Table 5 1 to identify halt pattern then replace J347 5 4 INDEX Address 3 3 3 5 3 6 Baud Rate 3 3 3 4 3 7 Cabling 3 13 3 14 Communications Parameters 3 3 3 4 3 6 3 7 Connectors 3 1 3 9 Daisy Chain Configuration 2 2 Disable U P P 3 2 Enable U P P 3 2 Halt Mode 4 1 4 2 5 1 5 2 Indicator Lights 3 1 3 9 5 1 5 2 Installation 3 10 1646 Computer Interface 2 1 J146 Programming Panel Interface 2 1 2 2 3 10 J478 Modem 2 2 3 13 3 14 Listen Only Mode 4 1 4 2 Locking Knob 3 1 3 11 3 12 MODBUS Messages l l 4 2 4 3 Mode of Transmission See Communications Parameters Multidrop Configuration 2 2 On Line Mode 4 1 4 2 Operation 4 1 Parity See Communications Parameters PC Type See Communications Parameters Point to point Connection 2 1 3 14 3 15
18. ed to place PC status or control information in these coils such as machine ON or OFF or error conditions exist This specially designed short message allows quick retrieval of status Used to test system communications This message uses subfunction codes to retrieve diagnostic information held at the slave start stop the slave PC access status counters and identify possible communication faults Function Code ER N N pa Un ado 7 ON 17 Function _ Name _ Fetch Event Counter Fetch Communications Event Log Program All PC Types Poll All PC Types Force Multiple Coils Preset Multiple Registers 1 3 Description Get the content of a counter which keeps a total of successful message completions Get status information on Communications such as messages received or messages sent Allows the user to remotely program and alter logic in a slave PC Subfunction codes are used to identify specific programming actions Subfunctions 1 Stop PC Read Write Allows the user to retrieve the response to a program message after the slave PC finishes processing the query This function is to be used only with function 13 Change the status ON or OFF of consecutive coils in a slave PC This command overrides the slave PC s memory protect and disable coil features Change the binary content of consecutive holding or output registe
19. g OFF switch down and ones being ON switch up The number is entered backwards in that the rightmost switch number one is the least significant bit and the left most switch number eight is the most significant bit Table 3 1 shows sample address switch settings Table 3 1 Address Switch Settings 0 OFF Switch Down 1 ON Switch Up Switch Number 8 7 6 5 4 3 2 1 Addr Addr Addr Addr Addr Addr Addr Addr Sample Address 64 32 16 Figure 3 5 shows switch packages set to some of the sample addresses MO OFF SWITCH DOWN CMS ON SWITCH UP WL o MJ o IL Cm GZ o Wo ILI o IL o IL Wi Mos aes ON IL ADDRESS 5 ADDRESS 9 ADDRESS 72 00000110 00001001 01001000 Figure 3 5 Sample Address Switch Settings Setting Communication Parameters Select the communication parameters according to Table 3 2 below Table 3 2 Communication Parameter Switch Settings OFF Switch down ON Switch up Stop Bits l stop bit 2 stop bits Parity Enable Disable enable parity disable parity 3 Even or Odd Parity even parity odd parity ASCII mode LS not used RTU mode Test mode 7 Controller Type 384 PC 184 PC AAA a Figure 3 6 shows switch packages set to some sample communication parameters MO OFF SWITCH DOWN CM ON SWITCH UP MO o Ca O o _ BE OM W WL lt MO e STOP BITS e 2 STOP BITS
20. hed to the J347 interface This must be done before the J347 interface is attached to the PC Figures 2 1 through 2 4 show valid configurations Devices shown in dotted lines are optional For detailed installation instructions see Section 3 of this manual Note that in all cases the J347 interface is connected directly to the 184 384 PC The only device that can be attached to the left side of the J347 interface is the J146 programming panel interface The J146 interface allows a P140 P145 P150 or P155 programming panel to communicate with a 184 384 PC NOTE The I646 computer interface cannot be used with the J347 interface If an I646 computer interface is required the J347 interface must be disconnected from the 184 384 PC This takes the PC off the MODBUS system 184 384 PC RS 232 CABLE NULL MODEM CONNECTION AT J347 SEE SECTION 3 2 5 Figure 2 1 Point to Point Single Slave Configuration TWISTED PAIR CABLE ae MAX 15 000 FT KAATER MASTER SLAVES Figure 2 2 Daisy Chain Zero Length Drop Configuration Using J478 Modems TWISTED PAIR CABLE TO OTHERS SLAVES MAX 15 000 FT MODBUS MASTER 184 384 PC MODICON W346 CABLE Figure 2 3 Multidrop Configuration Using J478 Modems 184 384 PC COAXIAL CABLE MODBUS COMMERCIAL ET uere R enoe Ben ROMA USER SUPPLIED MICROWAVE USER COMMUNICATIONS COMMERCIAL MODEM Figure 2 4 Multidrop Configurat
21. ion Using Commercial Modems SECTION 3 PHYSICAL DESCRIPTION AND INSTALLATION The J347 interface is a drip proof rugged unit that meets the same environmental specifications as the 184 and 384 PCs Figure 3 1 shows the main physical features of the unit U PP UNIVERSAL PROGRAMMING PANEL KEY SWITCH RETAINING SCREW FOR FACEPLATE INDICATOR LIGHTS FEMALE EDGE CONNECTORS TO 184 384 PC MOUNTING TAB FITS INTO 184 384 PC HOUSING LOCKING PIN FITS INTO 184 384 PC LOCKING KNOB LOCKING KNOB FOR CONNECTION OF J146 INTERFACE MOUNTING TAB FITS INTO 184 384 PC HOUSING FEMALE 25 PIN D CONNECTOR FOR CONNECTION TO MODEM 2 MALE EDGE CONNECTORS FOR CONNECTION OF Jl46 INTERFACE ACCESS FLAP OPEN Figure 3 1 J347 Interface Physical Features 3 1 Switches and Controls The J347 interface has the following switches and controls U P P Universal Program Panel key switch Baud rate switch package Communication parameter switch package Address switch package Reset button The U P P key switch is located on the top front portion of the interface The remaining switches and the reset button are located behind the indicator light faceplate on the front of the unit 3 1 1 U P P Key Switch The U P P Universal Program Panel key switch controls program panel access to the controller s memory This key switch is only used when a J146 programming panel interface is attached The U P P key switch must
22. nce The unit is designed to meet the same environmental specifications as the 184 384 PC 5 2 TROUBLESHOOTING There are three types of possible problems in a MODBUS system as shown below Communications errors Handled through automatic message retries Incomplete message processing due to an exception condition handled through the return of an exception response to the user Diagnostic test failure in the interface unit handled by alerting the user to the failure through the indicator light halt patterns The handling of communications errors and exception conditions does not involve troubleshooting at the J347 interface Therefore this section deals with indicator light halt patterns and provides a troubleshooting table 5 2 1 Indicator Light Halt Patterns Whenever an error is encountered during a diagnostic test the J347 interface stops enters Halt Mode and flashes a specific halt pattern on the indicator lights This can indicate that the J347 interface should be replaced The halt pattern should be noted and the information given to the repair facility if the unit is returned Table 5 1 defines the various halt patterns 5 2 2 Table 5 1 Halt Patterns 0 Light off 1 Light flashing 184 384 BUS RUN ACTIVE ERROR ERROR Not used RUN light error T bus failed MODBUS test failed Timer 0 test failed Timer l test failed Timer 2 test failed ROM chip 0 test
23. r Technical Does the system work the way it is O O O En O Accuracy described in the manual Readability Is the manual easy to read and O O O O O understand Clarity Are the instructions easy to follow O O O E Examples Are the examples helpful and realistic O O O O E Are there enough examples O C O O O Organization s the organization of the manual logical O D O O DO Is it easy to find what you are looking for O C O O E Illustrations Are the illustrations clear and useful D O O E Physical What did you think of the layout O g O O E Attractiveness printing binding etc Y N Are there any terms or concepts that are not defined clearly O O If so what are they Y N After reading this document are you able to use the equipment D O What errors did you find in the manual Please include page numbers Attach an extra sheet if necessary Do you have any comments or suggestions Name Street Title City Dept Mail Stop _ _____ 0002 State Country Company A use u Zip Code__________ Telephone Thank you for your heip ANI SNOW 0704 ANIM SNOT 07103 t rn INIT ONOIV 1InO 1 nn nn nenn NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES FIRST CLASS PERMIT NO 234 ANDOVER MA BUSINESS REPLY MAIL Gould Inc Programmable Control Division Postage will be paid by addressee P O BOX 3083 ATTN Technical Publications ANDOVER MA 01810 A
24. rs in the slave PC Input register contents cannot be changed This command overrides the slave PC s memory protect feature Report ID Get the slave PC type and runlight status Start PC Indicator lights on the front of the interface allow the user to determine if the interface is working properly or if an error has been detected No operator action is required during normal operation Once the unit is installed and connected it is ready to act as a MODBUS interface The J347 interface is offered under the following product designations J347 001 184 384 PC Slave Interface J346 0X1 184 384 PC Slave Interface J478 Modem 10 ft interconnecting cable J346 0X2 184 384 PC Slave Interface J478 Modem 30 ft interconnecting cable Note X can be 1 110 VAC 60 Hz or 2 220 VAC 50 Hz indicating the type of modem included in the package Table 1 2 gives specifications for the J347 interface Table 1 2 J347 Interface Specifications Height 15 00 in 381 00 Width 3 50 in 88 90 Depth 12 25 in 311 15 Weight 7 88 lbs 17 34 Environmental Ambient temperature 0 to 60 C Humidity 0 to 95 noncondensing Power Requirements All required power is obtained from the 184 384 PC SECTION 2 SYSTEM DESCRIPTION The J347 interface must be connected to a 184 384 PC and if required to a modem in order to act as a MODBUS slave interface A J146 programming panel interface may be attac
25. ssociated 184 384 PC Any of these steps should cause the J347 interface to run diagnostic tests then enter the On Line Mode If this doesn t happen the J347 interface should be replaced 4 3 J347 INTERFACE MODBUS MESSAGE RESPONSE TIME Table 4 1 shows typical response times for a number of MODBUS messages The response time is reached by adding preprocessing time reading validating and reformatting the message PC processing time and post processing time getting the message ready to send to the MODBUS master All times are shown in milliseconds pa3sn 3 e O su 07 JO SAUTJ ULIS ISPO IJSIOM JAIYUL q tTduoo oq sueoSs 29143 SaYe LT pooO uorqoundj z pasn alb SaINPTJ ueds 3580 IS10M UL ueos a43 Putinp suop ST Putrssadoldald qT qI 2310doy S19IST1b91 burpToq ZE 398 193IS1b31 PUTPTOU T 1398 sTToD TTS 495 TIO9 T 325 sp1om GT peal weiboldg p10M T p221 wexbola sn3e3s uor3d ox pray 19151521 T Was TtOO T 39104 s1938s16321 ndur 00T peod 193516591 ndut T pead s 33s1531 PUTPTOU 001 pead 193I5Tb9Y BurpToq T pead SJN UT ZTS Pean ndug T pead STTOoS ZTS pea TI02 T pead z 0 09 S9 Su JUTTI IDESSIN poo 1 PBuTssaD01d31d UOTJIUNA S9 Su JUTT 93SU JUTL O Su JUTTI asodsad Putrssadoold 3504 Purss oSodid Id SAUTL suods g T P TALL ra SECTION 5 MAINTENANCE AND TROUBLESHOOTING 5 1 MAINTENANCE The J347 interface requires no periodic maintena
26. t Terms are net 30 days from date of invoice Unless otherwise stated partial shipments will generate partial invoices Prices Prices are subject to change without notice Individual prices can be found in the Publications Catalog or obtained by calling an Order Entry Coordinator at 603 893 0400 GOULD Electronics JNN SNOT 4704 3NIT BNOTV QI0J PRO RG UL aa a cs nn INT NOVY IG TS a AVAIIUH M a a 2 a Lit 5 gt lt lt amp lt O c n nu OR ZwD ont 2242535 GPM AA E aaa Sa ADA AAA A 2 S c ijj O lt 2 lt eo a alo gt po l o e 8 A z u Ur x CC Eu C po Nu a SC gt N 3 S z S E LL y ee ze 3 213 EE y ID D O Sulz 35 2 m O lt LL KA Oad lt Gould Inc Industrial Automation Systems 1 High Street North Andover MA 01845 508 475 4700 Telex 443 0078 24 Hour Support Center 1 800 GOULD IA ma G O U LD 1M 3 89 NP Printed in U S A Electronics
27. the 184 384 PC locking knob is turned to ON power is supplied to the J347 interface and if attached to the J146 interface 3 2 3 Connecting the J347 Interface to a Modem If the J347 interface is to be connected to a J478 modem a MODICON supplied cable is used This cable may also be used with some commercial modems depending upon their required signals If the required signals differ from those supported by the cable the user must supply a cable or modify the MODICON supplied cable The MODICON supplied cables are as follows AS W346 010 10 foot long cable AS W346 030 30 foot long cable Figure 3 15 shows the configuration pin out of these cables 25 PIN TYPE D 25 PIN TYPE D MALE CONNECTOR MALE CONNECTOR FRAME GROUND TRANSMIT RECEIVE REQUEST TO SEND CLEAR TO SEND DATA SET READY SIGNAL GROUND Figure 3 15 Pin Out for AS W346 0X0 Cable Since the connection is direct and each end is terminated in a male D connector the user does not need to identify the two ends to connect the cable The cable may be attached at any time during the installation process Make sure the slide latches on the connectors are used to ensure a good connection 3 2 4 Connecting the J347 Interface Directly to a 184 384 PC If the J347 interface is used in a single slave point to point configuration see Figure 2 1 the user supplied cable must be a null modem connection The required pin out of the user supplied cable is shown
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