PanelView Modbus Communications User Manual
Contents
1. User Guide Modbus Communications for PanelView Terminals Introduction This document describes how to connect and configure communications for the Modbus versions of the PanelView terminals This document provides supplemental information for the PanelBuilder32 manuals Related Publications n ha Before using this Guide 2 Modbus Protocol 3 Modbus PanelView Terminals 3 Typical Modbus Network 4 Connector Pinout Definitions 7 Serial Port Connection 8 Modifying Modbus Settings from Terminal 9 Setting up Communications using PanelBuilder32 11 Modbus Address Spaces 14 Modbus Controller Data Table 15 Data Formats 16 Tag Editor 16 Downloading Applications over a Serial Link 19 Error Messages and Codes 20 Glossary 24 Publication 2711 6 9 2 Modbus Communications for PanelView Terminals Related publications Before using this guide Publication 2711 6 9 March 2000 The following documentation provides additional information on installing configuring and using your PanelView terminals Publication Titles Number PanelBuilder32 Getting Results Manual 2711 6 19 PanelBuilder32 Quick Start Manual 2711 6 20 PanelView Operator Terminal Manual 2711 6 1 The Modicon website provides information and product descriptions of Modbus products at www modicon com We assume that you are familiar with Modbus communications Since we cannot provide specific information abou2. Data Bits Parity 8 Odd Response Timeout ms HHHH Port Modem Handshake Modem RTS TX Delay ms HHHH RTS Off Delay ms HHHH CTS Timeout ms HHHH Restart Error Exit Terminal HHH Reset Terminal F1 Resets the terminal Baud Rate F2 Steps through the available baud rates 300 1200 4800 9600 19200 28800 and 38400 with each key or screen press A selected baud rate takes effect immediately Parity Data Bits F3 Steps through the available options e 8 EVEN e 8 ODD e 8 NONE Default Setting Note All communications occur with 1 stop bit Response Timeout ms F4 Opens the numeric entry scratchpad Provide a timeout value of 20 to 5000 milliseconds The timeout specifies the time after a command is sent by the PanelView terminal that an error is indicated by no response from the slave device Publication 2711 6 9 10 Modbus Communications for PanelView Terminals Publication 2711 6 9 March 2000 Port Modem Handshake F5 Steps through the available options e MODEM e RS 232 RS 422 e RS 485 Note The following delays RTS TX RTS Off and CTS Timeout facilitate modem communications Refer to your modem user manual for information on the recommended delay values RTS TX Delay ms F6 Opens the numeric entry scratchpad Provide a delay value of 0 to 2000 milliseconds The RTS TX delay specifies the delay between the assertion of the RTS signal and the transmission of the first cha
3. All tags in an alarm must reference the same network node In Alarm Setup change the alarm trigger tag and address corresponding alarm callout tags to correct the error condition All tags in an alarm must have the same Modbus address type In Alarm Setup change the alarm trigger tag and corresponding alarm callout tags to correct the error condition All tags in an alarm must be in the same direction to from the In Alarm Setup change the alarm trigger tag and network node corresponding alarm callout tags to correct the error condition There cannot be more than one tag in an alarm if the data In Alarm Setup change the alarm trigger tag and direction is to the network node corresponding alarm callout tags to correct the error condition Cannot write to an input register or input status address Use an output tag for an object or change the tag addresses in the Tag Editor to an output register or coil Not enough network address space to support a tag of this Change the tag address to reference a lower numbered data type discrete address or register Publication 2711 6 9 March 2000 Modbus Communications for PanelView Terminals 21 The following errors are not specific to Modbus but may appear when you exit the Tag Editor Message Minim um Value is invalid must be between 0 and 9999 Recommended Action Enter appropriate val ue in Tag Editor Minim um Value is invalid
4. is supported by thousands of authorized partners distributors and system integrators around the world Allen Bradley EELENSSIE DOQGE Americas Headquarters 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 382 2000 Fax 1 414 382 4444 Booe E Rockwell European Headquarters SA NV avenue Herrmann Debroux 46 1160 Brussels Belgium Tel 32 2 663 06 00 Fax 32 2 663 06 40 Asia Pacific Headquarters 27 F Citicorp Centre 18 Whitfield Road Causeway Bay Hong Kong Tel 852 2887 4788 Fax 852 2508 1846 Automation Publication 2711 6 9 March 2000 40061 386 01 B Supersedes Publication 2711 6 9 October 1997 Copyright 2000 Rockwell International Corporation Printed in the U S A
5. 000 Correct value in the Communications Setup Dialog Node Address is invalid must be between 1 and 255 Correct value in the Communications Setup Dialog Data Bits Parity is invalid Correct value in the Communications Setup Dialog Port Configuration Modem Handshaking is invalid 3 3 3 3 3 3 Correct value in the Communications Setup Dialog Baud Rate is invalid Correct value in the Communications Setup Dialog Terminal node not configured Configure the node in the Communications Setup Dialog Network node is invalid must be Modbus type Configure the node in the Communications Setup Dialog PanelBuilder32 Translation Error Messages Publication 2711 6 9 22 Modbus Communications for PanelView Terminals Message Not enough network node address space to support a tag of this data type Recommended Action Change the tag address to reference a lower numbered discrete address or register Not enough RAM on Daughtercard to support the size of this user application file Group tag addresses together as much as possible otherwise remove screen objects Translation Failure Publication 2711 6 9 March 2000 Contact Allen Bradley for technical support Modbus Communications for PanelView Terminals 23 Communication Status Error Messages These errors appear as a banner at the top of an application screen error 634 in upper left corner o
6. 1 6 9 14 Modbus Communications for PanelView Terminals Modbus Address Spaces Publication 2711 6 9 March 2000 The PanelView reads and writes data into other Modbus devices on the same network The Node Address specifies the device node and the Address Type specifies the address space The following address types are supported e Input Status status of Modicon controller discrete input e Output Coil status of Modicon controller discrete output e Input Register contents of input register in Modicon controller e Holding Register contents of holding register in Modicon controller Modbus devices can contain four distinct address spaces Two spaces are reserved for Coil data and two are reserved for Register data The PanelView terminal can read from any of the four address spaces However the PanelView terminal can only write to the Output Coil and Holding Register address spaces Coil Addressing In Write Tags If Output Coil address type is specified in a write tag the data is written to the Coil address using Modbus Function Code 5 single coil or Function Code 15 multiple coils In Read Tags If either Coil address type is specified in a read tag data is read from the appropriate Coil address For Input Status Coils the status of the discrete input is read using a Modbus Function Code 2 For Output Coils the status of the discrete output is read using Function Code 1 Register Addressing In Write Tags If
7. 1 bit for even odd parity no bit for no parity 1 stop bit if parity used 2 bits if no parity selected PanelBuilder32 Tag Editor Use the Tag Editor or the Tag Form dialog accessed from the object s dialog to enter tags There are 2 types of tags e digital for bit data types e register for all other data types Tag Editor amp Modbus1 Tageditor OF x Sab sBOl gt aS 2toladb T s e a wv Input Status X Modbus 4 S AVA Register Tag Form Dialog Bit Tag Form Dialog Tag Name Data Type Tag Name Data Type OK m OK Tee a hs z E Cancel Description _Cancel_ Description Cancel Node Name Tag Initial Value Node Name Tag Initial Value JMODBUS 7 fo MODBUS 7 fo Tag Address Type Tag Address Type Holding Register x Output Coil x Scaling _ p Data Entry Limits Scale Offset Min Max fi fo fo 65535 Publication 2711 6 9 March 2000 Tag Editor Fields Modbus Communications for PanelView Terminals 17 Field Description Valid Characters Notes Tag Name Name of tag Maximum characters 32 Tag name must be unique A Z a z 0 9 Can t start with 0 9 hyphen or percent hyphen underscore _ Tag names are not case sensitive percent Do not use blanks tabs carriage returns or non printable characters Data Type Data format of tag Select one of the following Data type must be compatible with the Bit data format selected in the object s A
8. BCD dialog Unsigned Integer Signed Integer IEEE Float Bit Array Character Array Array Size Size of array Character arrays are 1 128 Displays only if Bit Array or Character characters Array are selected Bit arrays are 1 16 bits Array size must be an integer A Modbus bit array can start at any input or coil address regardless of the word boundaries Do not use blanks tabs carriage returns or non printable characters Description Description of tag Maximum characters 255 Do not use tabs carriage returns or Any printable character non printable characters Node Name Name of node device assigned to tag Pull down list of previously Each node name is associated with a defined nodes node address Tag Initial Value The starting value for the current tag in engineering units used only for write tags Maximum characters 24 0 9 e E and period 0 or 1 for bit data type Do not use blanks tabs carriage returns or non printable characters Maximum precision is 6 places to the right of the decimal point for non floating point values If present a sign or for the number must be first is default If present a sign for the exponent must immediately follow the e or E No entry default of 0 Tag Address Address of the data in the slave device 0 to 65535 Do not use blanks tabs carriage returns or non printable characters A Modbus bit array can st
9. Holding Register address type is specified in a write tag data is written to the Register address using Modbus Function Code 6 single register or Function Code 16 multiple registers In Read Tags If an Input Register or Holding Register is selected in a read tag data is read from the appropriate Register address using Modbus Function Code 3 holding register or Function Code 4 input register Modicon Controller Data Table Modbus Communications for PanelView Terminals 15 Data and Address Types Not all of the data types are compatible with every address type The following table shows the Address Type available based on the selected data type Data Type Compatible Address Type s Bit Input Status Output Coil ABCD All Address types Unsigned Integer Input Register Holding Register Signed Integer Input Register Holding Register IEEE Float Input Register Holding Register Bit Array Input Status Output Coil Character Array Input Register Holding Register Modicon controllers store read and write address spaces in the following data table locations Note The PanelView does not require data addresses that conform to the address ranges provided in the following table For each address type the PanelView terminal supports address ranges from 0 to 65535 For example for a discrete input status at address 40000 the full address representation would be 140000 Address Address Type Data Ac
10. Setup Help for the download Internal DF1 Driver Setup Baud Rate Stop Bits rn 19200 4 le we Cancel I Hardware Handshake When the download is complete the terminal resets verifies and starts the application Publication 2711 6 9 20 Modbus Communications for PanelView Terminals Modbus Application Report The application printout for Modbus provides the following information e configuration data tag data Error Messages and Codes The following tables lists error messages and codes specific to Modbus communications For all other messages refer to the PanelView Operator Interface manual or the PanelBuilder32 online help PanelBuilder32 Tag Error Messages Message Recommended Action Tag Address is invalid number must be between 0 and 65535 Enter appropriate value 0 65535 in Tag Editor Character Array Size is invalid must be between 1 and 128 Enter appropriate value 1 128 in Tag Editor Maximum separation of coil tags in an alarm must be less than In Alarm Setup change the alarm callout tags so that their 1024 coils addresses are within the specified number of coils registers of the alarm trigger tag address Maximum separation of register tags in an alarm must be less In Alarm Setup change the alarm callout tags so that their than 64 registers addresses are within the specified number of coils registers of the alarm trigger tag address
11. ameters Specify Slave Response Timeout msec To Enter a value between 20 and 5000 milliseconds The default is 250 This timeout specifies the time after a command is sent by the PanelView terminal that an error is indicated by no response from the slave device Baud Rate Select the baud rate of the Modbus link The available baud rates are 300 1200 4800 9600 Default Setting 19200 28800 38400 Data Bits Parity Select Number of Data Bits and Parity 8 0DD 8 EVEN 8 NONE Default Setting Note Serial communications occur with 1 stop bit Port Configuration Modem Handshaking Select the communication port option RS232 Default Modem RS422 RS485 The Following Only Appear when Modem is Selected RTS TX Delay msec Enter a value between 0 and 2000 milliseconds The default is 0 This delay occurs between the asserting of RTS and the transmission of the first character of data RTS Off Delay msec Enter a value between 0 and 2000 milliseconds The default is 0 This delay occurs between the last data character transmitted and the deasserting of RTS CTS Timeout msec Enter a value between 0 and 2000 milliseconds The default is 100 This timeout specifies the delay between the assertion of the RTS signal by the PanelView terminal and assertion of the CTS signal by the modem 4 Click OK to exit and return to the Terminal Setup dialog Publication 271
12. anelView BM85 2 3 3 2 4 5 5 6 7 8 g Modbus _ RF RFE Modbus Port Modem Modem PanelView Publication 2711 6 9 6 Modbus Communications for PanelView Terminals Making Modbus Connections Publication 2711 6 9 March 2000 The PanelView Modbus protocol communicates with other devices over an RS 232 point to point or RS 485 RS 422 multi drop serial link Refer to the following pinout information to connect the PanelView to a Modbus network Important Follow the Modbus network layout and design as specified by the user manual for your programmable controller PanelView PanelView Modbus Connector Line Termination DIP Switch for RS 485 422 oO 3j 2 9 6 OFF E Refer to next page for a ON description of pinout connections Not Used OFF termination is off ON line terminated Line Termination The device at each end of an RS 485 422 network should be terminated A termination switch is provided on the PanelView see figure above Enabling line termination provides an RC line termination of 01mF and 120Q Do not use line termination for RS 232 communications Do not terminate devices between the network ends ATTENTION Use a nonconducting probe to change the line termination switch Do not use a graphite pencil or other conductive material Failure to use a nonconducting tool may result in damage to the Pane
13. art at any input or coil address regardless of the word boundaries Publication 2711 6 9 18 Modbus Communications for PanelView Terminals Field Description Valid Characters Notes Type Determines address of the data in the Options are Address Type may support some or all of slave device Input Status the data types Refer to page 15 Output Coil Input Register Holding Register Scaling Values you want to use to convert the Maximum characters 12 Do not use blanks tabs carriage returns Scale current tag s processor integer value x 0 9 or non printable characters m iny mx b to engineering units y e E and period Maximum precision for scale is 6 places Offset to right of decimal point b iny mx b Maximum precision for offset is 6 places to right of decimal point If present a sign or for the number must be first is default If present a sign for the exponent must immediately follow the e or E Data Entry Limits Minimum Maximum Minimum and maximum values that can be assigned to the tag Maximum characters 12 e E and period Do not use blanks tabs carriage returns or non printable characters Maximum precision is 6 places to right of decimal point If present a sign or for the number must be first is default If present a sign for the exponent must immediately follow the e or E Publication 2711 6 9 Ma
14. ay ood C Touch P 1400 Pv300 Profibus DP Keypad amp Touch I Set As Default Terminal Selection Catalog amp Revision Numbers gt gt Application Settings Modbus1 x Status Tags Control Tags Time Date P 1000 Color Advanced Power Up Terminal Setup Project Display Maintenance ExtemalFonts Printer Comms Setup Selected Terminal 2711 K10014 PV1000 Color Key FAN 4 00 4 xx p PaneMiew Protocol ControlNet 1 5 a Keypad C Touch Keypad amp Touch Profibus DP r Auxiliary Port Usage C Download C Printing Indicates RS 232 port is set for downloading applications not printing Catalog amp Revision Numbers Publication 2711 6 9 12 Modbus Communications for PanelView Terminals Configuring Modbus Communications Modbus communication parameters are accessed from the Terminal Setup dialog To open the Terminal Setup dialog choose Terminal Setup from the PanelBuilder32 Application menu Application Settings Modbus1 x Status Tags l Control Tags Time Date PY1000 Color Advanced Power Up Terminal Setup Project Display Maintenance ExtemalFonts Printer Tamaa Nene Comment Setup HE Modbus1 pluses x p Slave Response Baud Data Bits Selected Termi Timeout msec Rate Parity Cancel 2711 K10C14 F 250 9600 B NONE Help ik PanelView Port Configuration Modem Handshaking AS232 pal Publication 2711 6 9 Mar
15. cess Description OXXXXX Discrete Output Bit Read or Write Use to drive a real output through an output module or to or Coil Internal set one or more internal coils A coil can be used to drive multiple contacts 1XXXXX Discrete Bit Read Only Use to drive contacts in the logic program The Input state Input Status is controlled by an input module SXXXXX Input Register Word Read Only Holds numeric inputs from an external source for example a thumb wheel entry an analog signal or data from a high speed counter A 3x register can also store 16 contiguous discrete signals that are entered into the register in either binary or binary coded decimal BCD formats AXXXXX Output Word Read and Use to store numerical decimal or binary information or Holding Register Write to send the information to an output module 6XXXXX Extended Access through Use to store information in an extended memory area Memory Register Logic Program only Only available in PLCs with 24 bit CPUs that support extended memory such as the 984B E984 785 and Quantum series of PLCs Publication 2711 6 9 16 Modbus Communications for PanelView Terminals Data Format Modicon controllers communicate in either ASCII or RTU Remote Terminal Unit transmission mode The PanelView only supports RTU mode In RTU mode each 8 bit byte contains 2 four bit hexadecimal characters The following is supported e 1 start bit e 8 data bits least significant bit first
16. ch 2000 m Network Nodes Wodename Hode Address Node Type End of Node List r Auxiliary Port Downlo If RS232 RS422 or RS422 Port Configuration is selected Communication Setup 21x Terminal d OK Slave Response Baud Data Bits Timeout msec Rate Parity Cancel 250 9600 fad 8 NONE Help Port Configuration RTS TX Delay RTS Off Delay GTS Modem Handshaking msec msec Timeout msec MODEM Wad fo fo fio r Network Nodes mem id End of Node List If Modem Handshaking is selected 1 Click the Comms Setup button from the Terminal Setup dialog 2 Under Network Devices edit the following parameters Specify To Node Name Either select a previously defined network node name or enter a new name of up to 32 characters The name is validated when you click the OK to make sure it has not been previously assigned to another PanelView in the same project Node Address Select the address 1 to 255 of the slave device on the Modbus link This address is associated with the network device selected in the Name field above Each node on the network should be assigned a unique address Type Select Modbus as the type You cannot create or modify the configuration of a device with a Type defined as Other not Modbus Modbus Communications for PanelView Terminals 13 3 Under Terminal edit the following par
17. erminal with DC power e g T9A14L1 Publication 2711 6 9 4 Modbus Communications for PanelView Terminals Typical Modbus Network Shown below is a typical Modbus network with Modbus Controllers installed on two of the network drops PanelView ma zem Master Device 1 per Network Modbus Port RS 232 Port RS 485 422 Computer for developing PanelView applications Serial Link n J or q i e f EEEN u Printer Modbus Programmable Controller or Device Emulating a Controller Slave Device Modbus Programmable Controller or Device Emulating a Controller Slave Device 7h ie oe x Modbus a Publication 2711 6 9 March 2000 Connection to a Modbus Plus Network Modbus Communications for PanelView Terminals Using a Bridge Multiplexer BM85 or an RF modem the Modbus PanelView can be connected to a Modbus Plus network Modbus Plus is a local area network supporting up to 64 nodes at a data transfer rate of 1 000 000 bits second Modbus Plus provides host level peer to peer communication for network devices The network also provides distributed input output DIO communications The BM85 Bridge Multiplexer provides connection to a Modbus Plus network through the PanelView Modbus RS 232 serial port Modbus BM Modbus RS 232 85 Port Bridge Multiplexer PanelView Cable PanelView to BM85 P
18. imeout Failure Indicates that the Check the cabling and if necessary increase modem failed to assert the CTS line within the time the CTS timeout on the communications specified on the configuration screen configuration screen 7 22 Internal Errors Reset Terminal Contact Allen Bradley technical support if problem reoccurs Publication 2711 6 9 Glossary Coil Bit location in a a Modbus device Digital Tag A bit address Inputs Data which is received by the logic controller from other devices Master Device which sends messages queries to one or more slave devices Modicon Controller Refers to the 184 384 484 584 884 M84 micro or 984 family of Modicon logic controllers Outputs Data which is sent by a logic controller to other devices Register 16 bit unsigned value residing in a Modbus device RTU Acronym for Remote Terminal Unit one of 2 possible transmission formats supported by Modbus PanelView terminals only support RTU Slave Device which receives queries from the master and provides a response Reach us now at www rockwellautomation com Wherever you need us Rockwell Automation brings together leading brands in industrial automation including Allen Bradley controls Reliance Electric power transmission products Dodge mechanical power transmission components and Rockwell Software Rockwell Automation s unique flexible approach to helping customers achieve a competitive advantage
19. lView Modbus Communications for PanelView Terminals 7 Connector Pinout The communication type is downloaded with an application or is set Definitions on the terminal configuration screen The PanelView supports RS 232 RS 485 and RS 422 communication standards The Modbus 9 pin male D shell connector has the following pin definitions for each standard Pin Function Number RS 232 RS 485 RS 422 1 Shield o Sheda 2 RXD RXD 1 2 3 TXD TXD 4 DTR See note 5 COMMON COMMON 6 DSR See note 7 RTS TXD 8 CTS RXD 12 9 No Connection No Connection 1 In RS 485 mode pin 2 and pin 3 require an external jumper to electrically connect pins 2 and 3 2 In RS 485 mode pin 7 and 8 require an external jumper to electrically connect pins 7 and 8 3 These pins must remain unconnected Publication 2711 6 9 8 Modbus Communications for PanelView Terminals Making Serial Port Use the RS 232 serial port on the PanelView terminal to Connections e download upload applications over a serial link or to connect a printer PanelView Computer g T i nej Pi Il l COMM1or2 a E o a DN RS 232 Printer File Transfer Port Available Cables 2711 NC13 5 m 16 4 ft 2711 NC14 10 m 32 7 ft 2706 NC13 3m 10 ft Pis ll 9 to 25 Pin Adapter a required 1 No ta ap 9 pin ma
20. le 1 n female OeoOonN Do AON PV550 Printer Port DCE 9 pin male 9 pin male 1 NC 1 NC 2 RXD or RX1 Data Receive 3 TXD or TX1 Data Transmit PV300 600 900 1000 1400 Printer Port DCE Printer Printer Computer Port DTE 9 pin female 1 DCD 2 RXD or TR1 Data Receive _ 2 RXD Data Receive 3 TXD or TX1 Data Transmit lt _ 3 TXD Datta Transmit 4 NC 4NC 4 DTR 5 COM 5 COM gt 5 COM 6 DSR pulled high to 12V 6 DSR pulled high to 12V 6 DSR 7 NC 7 RTS or RX2 Data Receive 7 RTS 8 CTS pulled high to 12V 8 CTS or TX2 Data Transmit 8CTS 9 NC 9 NC 9 NC Upload Download or Printer Cable without Hardware Handshaking PV550 Printer Port DCE 9 pin male 9 pin 25 pin 2 RXD or RX1 Data Receive 2 3 3 TXD or TX1 Data Transmit 3 2 5 COM 5 7 TXD COM Publication 2711 6 9 March 2000 Printer Computer Port DTE RXD Data Receive TXD Data Transmit Modbus Communications for PanelView Terminals 9 Modifying Modbus Settings You can display or modify Modbus settings directly from the terminal From the from the Terminal Configuration Mode menu of the terminal select Serial Communication Setup The screen below appears ATTENTION Settings downloaded with a Modbus application have priority over terminal settings Modbus settings take effect immediately after an application is downloaded MODBUS RTU MASTER FHA Baud 9600
21. must be between 0 and 65535 Enter appropriate val ue in Tag Editor Minim um Value is invalid must be between 32768 and 32767 Enter appropriate val ue in Tag Editor Minim um Value is invalid must be between 99999997952 and 999999995904 Enter appropriate val ue in Tag Editor Maximum Value is invalid must be between 0 and 9999 Enter appropriate val ue in Tag Editor Maximum Value is invalid must be between 0 and 65535 Enter appropriate val ue in Tag Editor Maximum Value is invalid must be between 32768 and 32767 Enter appropriate val ue in Tag Editor Maximum Value is invalid must be between 0 and 9999 Enter appropriate val ue in Tag Editor Scale Value is invalid must be between 99 999997952e9 and 999 999995904e9 Enter appropriate val ue in Tag Editor Offset Value is invalid must be between 99 999997952e9 and 999 999995904e9 Enter appropriate val PanelBuilder32 Node Error Messages Message Slave Response Timeout is invalid must be between 20 and 50000 ue in Tag Editor Recommended Action Correct value in the Communications Setup Dialog RTS TX Delay is invalid must be between 0 and 2000 Correct value in the Communications Setup Dialog RTS Off Delay is invalid must be between 0 and 2000 Correct value in the Communications Setup Dialog CTS Timeout is invalid must be between 0 and 2
22. r as a status display on the terminal configuration screen Note Since the PanelView is configured as a master device communication status is not updated until the PanelView requests information If communications are lost the PanelView displays the last communication status Errors numbered less than 7 are considered minor fault conditions and will clear automatically when corrected Errors numbered 7 and above require that the terminal be reset to clear the error Code Indicates Recommended Action 1 No connections established Occurs on power up Establish a connection over Modbus to the until a device connection is established on the PanelView network 2 Invalid Messages Parity Error The Parity received by the Check that the parity of both the PanelView PanelView is invalid terminal and Modbus device are set the same 3 Error Reply Messages Application Error Error indicates Verify the coil and register addresses used in that the Modbus device does not support a coil or register the application address requested by the PanelView terminal 4 Error Detect Failures CRC Error Indicates that the Verify the address of each Modbus device and messages from a Modbus device contain an invalid Cyclic cabling to each device Redundancy Check 5 Loss of Communications Rx Timeout Indicates Modbus Verify that the Modbus device supports RTU device is not responding communications 6 Modem Failure CTS T
23. racter of the Modbus message RTS Off Delay Gms F7 Opens the numeric entry scratchpad Provide a delay value of 0 to 2000 milliseconds The RTS Off delay specifies the delay between the transmission of the last character of the Modbus message and the assertion of the RTS signal CTS Timeout ms F8 Opens the numeric entry scratchpad Provide a timeout between 0 to 2000 milliseconds The CTS timeout specifies the maximum allowable delay between the assertion of the RTS signal by the PanelView terminal and the assertion of the CTS signal by the modem Exit F10 or F16 Returns to the Configuration Mode menu Modbus Communications for PanelView Terminals 11 Setting up Communications Setting up Modbus communications for an application includes e selecting a Modbus terminal when creating the application e configuring communication parameters for the terminal on the Modbus link Selecting a Modbus PanelView Terminal Select a Modbus terminal for a PanelView application from e Create New Application dialog or the e Terminal Setup tab of the Application Settings dialog when converting the application to run in another terminal Any catalog number with 14 as the last number 2711 xx14 is a Modbus terminal Create New Application 29 x Application Name fit Cancel Selected Terminal Help 2711 K10C14 PV1000 Color Key FAN 4 00 4 xx Paneliew Type Protocol 165 7371 Keypad P1000 Color PYID00Gr
24. rch 2000 Modbus Communications for PanelView Terminals 19 Downloading Applications over a Serial Link These are default settings that must match the fixed settings of the pe Error Checking Panelview terminal None cre C BCC Even C Odd To download a Modbus application from your computer to the PanelView terminal over an RS 232 link e connect computer to RS 232 port of PanelView terminal e download application from the PanelBuilder32 File menu Downloading Application using the Internal DF1 Driver This section shows how to download an application from a serial COM port on your computer to the RS 232 DF1 port of the PanelView terminal using a point to point connection The download uses the internal DF1 driver on your computer s COM1 COM9 port This driver uses fixed DF1 settings that match those of the RS 232 port of the terminal Use the 2711 NC13 cable 9 pin connector for the point to point connection Check the cable connections before starting the download Open the application you want to download and select File gt Download The application is validated during the download Any errors that occur during validation must be corrected before you can proceed with the download Download File BE r Application Name Tne Starts the Name of application _ Sample download being downloaded Cancel r Iransfer Type Select a COM port gam UF 1 Point to Point Internal COM2
25. t every type of application the PanelView might be used in the information provided in this document is general rather than specific Refer to glossary at the end of this publication for definitions of unfamiliar terms Modbus protocol Modbus PanelView Terminals Modbus Communications for PanelView Terminals 3 Modbus protocol links Modicon Programmable Controllers and devices emulating Modicon Programmable Controllers in a wide variety of applications Modbus protocol defines a message structure that controllers can use regardless of the network type over which they communicate Modbus is a half duplex master slave communications protocol The network master PanelView reads and writes coils and registers as if it was a Modicon controller Every device on a Modbus communication link emulates the coils and registers of a Modicon Programmable Controller Modbus allows a host to read and write coils registers and obtain diagnostic information Modbus protocol allows a single master to communicate with a maximum of 255 slave devices The master device on a Modbus network is not assigned an address Modbus terminals are identified by a 14 at the end of the catalog number for example 2711 K9C14 The Modbus terminals have e Modbus communication port RS 232 printer file transfer port In addition each terminal is available with either e AC or DC power The characters L1 at the end of the catalog number designate a t
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