Mitsubishi MELSEC QS Series, User Manual

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APPENDICES
Appendix 7 Dedicated Instructions which can be used in Safety CPU
Module
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Appendix 7 Dedicated Instructions which can be used in Safety CPU
Module
Appendix 7.1 List of dedicated instructions
(1) Dedicated instructions which can be used in the safety CPU module
TableApp.27 lists the dedicated instructions which can be used in the safety CPU
module.
* 1: Only connection No.1 to No.8 can be specified. If the specified connection is out of the range, an
OPERATION ERROR (error code: 4101) occurs.
* 2: The REQ instruction only reads and writes clock data. If other operations are requested, an
OPERATION ERROR (error code: 4001) occurs.
TableApp.27 List of available dedicated instructions
Application
Dedicated
instruction
Function description
Supported network
CC-Link IE
controller
network
MELSECNET
/H
Ethernet
For opening and closing
connections
OPEN
*1
Establishes a connection.
CLOSE
*1
Disconnects a connection.
For fixed buffer communication
BUFRCV
*1
Reads received data. (for main program)
BUFSND
*1
Sends data.
For reading and clearing error
information
ERRCLR Clears error information.
ERRRD Reads error information.
For reinitialization UINI Reinitializes the Ethernet module.
For communication with
programmable controller CPU
on another station (Data link
instruction)
READ
Reads data from word devices of the CPU
module on another station.
SREAD
Reads data from word devices of the CPU
module on another station. (with completion
devices)
WRITE
Writes data to word devices of the CPU module
on another station.
SWRITE
Writes data to word devices of the CPU module
on another station. (with completion devices)
REQ
*2
• Reads clock data from the CPU module on
another station.
• Writes clock data to the CPU module on
another station.
RTMRD
Reads clock data from the CPU module on
another station.
RTMWR
Writes clock data to the CPU module on another
station.