Document Outline

• SAFETY PRECAUTIONS
• REVISIONS
• INTRODUCTION
• CONTENTS
• About Manuals
• Conformation to the EMC Directive and Low Voltage Instruction
• The Manual's Use and Structure
• About The Generic Terms and Abbreviations
• Definitions and Descriptions of Terminology
• Product Configuration
• 1 OVERVIEW
  • 1.1 Overview of the Serial Communication Module
  • 1.2 Features of the Serial Communication Module
  • 1.3 About Added/Changed Functions in Function Version B
• 2 SYSTEM CONFIGURATION AND AVAILABLE FUNCTIONS
  • 2.1 Applicable Systems
  • 2.2 Combinations of PLC CPU and External Device, and Available Functions
  • 2.3 For Use in Multiple CPU System
  • 2.4 For Use with Q00J/Q00/Q01CPU
  • 2.5 For Use at MELSECNET/H Remote I/O Station
  • 2.6 Checking the Function Version, Serial No., and Software Version
• 3 SPECIFICATIONS
  • 3.1 Performance Specifications
  • 3.2 RS-232 Interface Specification
    • 3.2.1 RS-232 connector specifications
    • 3.2.2 RS-232 cable specification
  • 3.3 RS-422/485 Interface Specifications
    • 3.3.1 RS-422/485 terminal block specifications
    • 3.3.2 RS-422/485 cable specifications
    • 3.3.3 Precautions when transferring data using RS-422/485 circuit
  • 3.4 Serial Communication Module Function List
  • 3.5 Dedicated Instruction List
  • 3.6 Utility Package (GX Configurator-SC) Function List
  • 3.7 List of GX Developer Setting Items for Serial Communication Modules
  • 3.8 List of Input/Output Signals for the PLC CPU
  • 3.9 List of Applications and Assignments of the Buffer Memory
• 4 SETTINGS AND PROCEDURES PRIOR TO OPERATION
  • 4.1 Handling Precautions
  • 4.2 Settings and Procedures Prior to Operation
  • 4.3 Part Names and Functions
  • 4.4 External Wiring
    • 4.4.1 Connecting the RS-232 interface (full-duplex communications)
    • 4.4.2 Connecting the RS-422/485 interface
  • 4.5 Settings for GX Developer
    • 4.5.1 I/O assignment settings
    • 4.5.2 Switch settings for I/O and intelligent functional module
    • 4.5.3 The Intelligent function module interrupt pointer setting
  • 4.6 Settings with the Utility Package (GX Configurator-SC)
  • 4.7 Individual Station Test
    • 4.7.1 ROM/RAM/switch tests
    • 4.7.2 Individual station loopback test
  • 4.8 Loopback Test
  • 4.9 Maintenance and Inspection
    • 4.9.1 Maintenance and inspection
    • 4.9.2 When mounting/dismounting the module
• 5 DATA COMMUNICATION USING THE MELSEC COMMUNICATION PROTOCOL
  • 5.1 Data Communication Functions
    • 5.1.1 Accessing the PLC CPUs using the MC protocol
    • 5.1.2 Message format and control procedure for data communication
    • 5.1.3 PLC CPU setting for performing data communication
    • 5.1.4 Support of multiple CPU system or redundant system
    • 5.1.5 Support for the QCPU remote password function
  • 5.2 Utilizing the MX Component
• 6 DATA COMMUNICATION USING THE NON PROCEDURE PROTOCOL
  • 6.1 Data Reception from the External Device
    • 6.1.1 Receiving methods
    • 6.1.2 The receive area and the received data list
    • 6.1.3 Sequence program for data reception
    • 6.1.4 Receive data clear
    • 6.1.5 How to detect reception errors
    • 6.1.6 Received data count and receive complete code settings
  • 6.2 Sending Data to the External Device
    • 6.2.1 Transmission methods
    • 6.2.2 Arrangement and contents of the transmission area and the transmission data
    • 6.2.3 Sequence program for transmission data
    • 6.2.4 How to detect transmission errors
  • 6.3 Data Communications Precautions
• 7 DATA COMMUNICATION USING THE BIDIRECTIONAL PROTOCOL
  • 7.1 Data Reception from the External Device
    • 7.1.1 Receiving methods
    • 7.1.2 Arrangement and contents of the receive area and the receive data
    • 7.1.3 Sequence program for data reception
    • 7.1.4 How to detect reception errors
    • 7.1.5 Receive data clear
  • 7.2 Sending Data to the External Device
    • 7.2.1 Transmission methods
    • 7.2.2 Arrangement and contents of the transmission area and the transmission data
    • 7.2.3 Sequence program for data transmission
    • 7.2.4 How to detect transmission errors
  • 7.3 Processing when Simultaneous Transmission Performed During Full-Duplex Communications
    • 7.3.1 Processing when simultaneous transmissions occur
    • 7.3.2 Communication data processing when simultaneous transmissions occur
  • 7.4 Data Communications Precautions
• 8 UTILITY PACKAGE (GX Configurator-SC)
  • 8.1 Functions Available with Utility Package
  • 8.2 Installing and Uninstalling Utility Package
    • 8.2.1 Usage precautions
    • 8.2.2 Operating environment
  • 8.3 Explanation of Utility Package Operation
    • 8.3.1 Operation overview
    • 8.3.2 Starting the intelligent function module utility (displaying the [select parameter setting module] screen)
    • 8.3.3 Performing common utility operations
  • 8.4 System Registration to Flash ROM
    • 8.4.1 User frame registration
    • 8.4.2 Data for modem initialization registration
    • 8.4.3 Data for modem connection registration
    • 8.4.4 Modem function system setting/registration
    • 8.4.5 Transmission control and others system setting
    • 8.4.6 MC protocol system setting
    • 8.4.7 Non procedure system setting
    • 8.4.8 Bidirectional system setting
    • 8.4.9 PLC CPU monitoring system setting
    • 8.4.10 Transmission user frame No. designation system setting
    • 8.4.11 Resetting the buffer memory/flash ROM setting values to the default values
    • 8.4.12 Flash ROM write allow/prohibit setting
  • 8.5 Auto Refresh Setting
  • 8.6 Monitor/Test
    • 8.6.1 X · Y monitor/test
    • 8.6.2 Modem function monitor/test
    • 8.6.3 Transmission control and others monitor/test
    • 8.6.4 MC protocol monitor
    • 8.6.5 Non procedure monitor/test
    • 8.6.6 Bidirectional monitor
    • 8.6.7 PLC CPU monitoring monitor
    • 8.6.8 Transmission user frame No. designation monitor
    • 8.6.9 Monitor/test others
    • 8.6.10 Display LED off and communication error information/error code initialization
  • 8.7 Non Procedure Protocol Receive Data Clear
• 9 DEDICATED INSTRUCTIONS
  • 9.1 Dedicated Instruction List
  • 9.2 ONDEMAND Instruction
  • 9.3 OUTPUT Instruction
  • 9.4 INPUT Instruction
  • 9.5 BIDOUT Instruction
  • 9.6 BIDIN Instruction
  • 9.7 SPBUSY Instruction
  • 9.8 CSET (Receive data clear)
• 10 TROUBLESHOOTING
  • 10.1 Checking the Status of the Serial Communication Module
    • 10.1.1 Checking the LED ON status, communications error status, and switch setting status of the serial communication module
    • 10.1.2 Initializing error information of the serial communication module
    • 10.1.3 Reading the RS-232 control signal status
    • 10.1.4 Reading the data communication status (Transmission sequence status)
    • 10.1.5 Reading the switch setting status
    • 10.1.6 How to read the current operation status
  • 10.2 Error Code Tables
    • 10.2.1 Error code table
    • 10.2.2 A compatible 1C frame communications error code table
    • 10.2.3 Error code list while modem function is used
  • 10.3 Troubleshooting by Symptom
    • 10.3.1 Troubleshooting when "RUN" LED is turned OFF
    • 10.3.2 Troubleshooting when "RD" LED does not blink even though an external device is transmitting a message
    • 10.3.3 Troubleshooting when the Q series C24 does not return a response message even though an external device ...
    • 10.3.4 Troubleshooting when an external device transmitted a message and "RD" LED blinked, but the Read Request signal ...
    • 10.3.5 Troubleshooting when communication error "NAK" generates
    • 10.3.6 Troubleshooting when communication error "C/N" generates
    • 10.3.7 Troubleshooting when communication error "P/S" generates
    • 10.3.8 Troubleshooting when communication error "PRO." generates
    • 10.3.9 Troubleshooting when communication error "SIO" generates
    • 10.3.10 Troubleshooting when communication error "CH1 ERR.", "CH2 ERR." generate
    • 10.3.11 Troubleshooting when communications is intermittently established and lost
    • 10.3.12 Troubleshooting when data that cannot be decoded is transmitted and received
    • 10.3.13 Troubleshooting when it is unclear whether the communication error cause is in the Q series C24 or an external device
    • 10.3.14 Troubleshooting when data cannot be communicated via modem
    • 10.3.15 Troubleshooting when data cannot be communicated with the ISDN sub-address
    • 10.3.16 Troubleshooting when constant cycle transmission does not operate normally
    • 10.3.17 Troubleshooting when condition agreement transmission does not operate normally
    • 10.3.18 Troubleshooting when data cannot be received by an interrupt program
    • 10.3.19 Troubleshooting when data cannot be written to Flash ROM
    • 10.3.20 Troubleshooting when the "ERR" LED is lit
• APPENDIX
  • Appendix 1 Functional Improvements of the Q Series C24
    • Appendix 1.1 Comparison of the Functions of Q Series C24/GX Configurator-SC
    • Appendix 1.2 Precautions when Updating the Module from Function Version A to B
  • Appendix 2 QnA/A Series Module
    • Appendix 2.1 Functional Comparison with the Q series C24 and the QnA/A Series Modules
    • Appendix 2.2 Using Programs Designed for the QC24 (N) and Installing the Q Series C24 into Existing Systems
      • Appendix 2.2.1 Using programs designed for the QC24 (N)
      • Appendix 2.2.2 Installing on existing systems
    • Appendix 2.3 Using Programs Designed for the Computer Link Module and Installing the Q Series C24 into Existing Systems
      • Appendix 2.3.1 Using programs designed for the computer link module
      • Appendix 2.3.2 Installing the Q series C24 into existing systems
  • Appendix 3 Processing Time
  • Appendix 4 ASCII-Code Table
  • Appendix 5 External Dimensions
  • Appendix 6 Example of Connection when a Converter is Used
  • Appendix 7 Communication Support Tool (MX Component)
    • Appendix 7.1 Overview of MX Component
    • Appendix 7.2 Usage Procedure of MX Component
  • Appendix 8 Example of Clear Process Program for Receive Data
  • Appendix 9 Program Examples for Using Q Series C24 at MELSECNET/H Remote I/O Station
    • Appendix 9.1 System configuration and program conditions
    • Appendix 9.2 When accessing buffer memory using sequence program
    • Appendix 9.3 When sending on-demand data
    • Appendix 9.4 When receiving data using nonprocedural or bidirectional protocol
    • Appendix 9.5 When sending data using nonprocedural or bidirectional protocol
    • Appendix 9.6 When clearing received data
    • Appendix 9.7 When sending data using user frames
    • Appendix 9.8 When performing initial setting
    • Appendix 9.9 When registering user frame
    • Appendix 9.10 When reading user frame
    • Appendix 9.11 When deleting user frame
    • Appendix 9.12 When changing the communication protocol and transmission setting
  • Appendix 10 Setting Value Recording Sheet
• INDEX
• WARRANTY