A - 8                                                A - 8
4  SETTINGS AND PROCEDURES PRIOR TO OPERATION 4- 1 to 33
4.1  Handling Precautions.............................................................................................................................. 4-  1
4.2  Settings and Procedures Prior to Operation .......................................................................................... 4-  2
4.3  Part Names and Functions ..................................................................................................................... 4-  3
4.4  External Wiring........................................................................................................................................4-  5
4.4.1  Connecting the RS-232 interface (full-duplex communications) .................................................... 4-  6
4.4.2  Connecting the RS-422/485 interface .............................................................................................4-  8
4.5  Settings for GX Developer ......................................................................................................................4-12
4.5.1  I/O assignment settings....................................................................................................................4-12
4.5.2  Switch settings for I/O and intelligent functional module ................................................................4-13
4.5.3  The Intelligent function module interrupt pointer setting.................................................................4-20
4.6  Settings with the Utility Package (GX Configurator-SC)........................................................................4-22
4.7  Individual Station Test.............................................................................................................................4-25
4.7.1  ROM/RAM/switch tests.................................................................................................................... 4-25
4.7.2  Individual station loopback test........................................................................................................4-28
4.8  Loopback Test......................................................................................................................................... 4-30
4.9  Maintenance and Inspection...................................................................................................................4-32
4.9.1  Maintenance and inspection............................................................................................................4-32
4.9.2  When mounting/dismounting the module........................................................................................4-33
5  DATA COMMUNICATION USING THE MELSEC COMMUNICATION PROTOCOL 5- 1 to 5- 6
5.1  Data Communication Functions ............................................................................................................. 5-  1
5.1.1  Accessing the PLC CPUs using the MC protocol........................................................................... 5-  1
5.1.2  Message format and control procedure for data communication...................................................5-  2
5.1.3  PLC CPU setting for performing data communication.................................................................... 5-  2
5.1.4  Support of multiple CPU system or redundant system...................................................................5-  3
5.1.5  Support for the QCPU remote password function ..........................................................................5-  4
5.2  Utilizing the MX Component ...................................................................................................................5-  6
6  DATA COMMUNICATION USING THE NON PROCEDURE PROTOCOL 6- 1 to 6-31
6.1  Data Reception from the External Device..............................................................................................6-  2
6.1.1  Receiving methods...........................................................................................................................6-  2
6.1.2  The receive area and the received data list ....................................................................................6-  6
6.1.3  Sequence program for data reception.............................................................................................6-11
6.1.4  Receive data clear............................................................................................................................6-14
6.1.5  How to detect reception errors.........................................................................................................6-17
6.1.6  Received data count and receive complete code settings ............................................................. 6-20
6.2  Sending Data to the External Device .....................................................................................................6-22
6.2.1  Transmission methods.....................................................................................................................6-22
6.2.2  Arrangement and contents of the transmission area and the transmission data........................... 6-23
6.2.3  Sequence program for transmission data .......................................................................................6-25
6.2.4  How to detect transmission errors...................................................................................................6-28
6.3  Data Communications Precautions........................................................................................................ 6-30