Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

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Appendix B
CompoWay/F Master Protocol
The CompoWay/F Master Protocol is used to send CompoWay/F commands with the CS/CJ-series PLC serv-
ing as the host (master).
CompoWay/F
CompoWay/F is a protocol used by many OMRON components for serial communications. A host computer of
a PLC can function as a host (master) to send CompoWay/F commands (message frames) to OMRON compo-
nents, which function as slaves. The components will return responses to these commands. Using CompoWay/
F commands, the host can read/write data, settings, and operating status to control the operation of the com-
ponents.
CompoWay/F has the following features.
• The same message frame format is used, eliminating the need for special protocols for each component.
The same commands can thus be used for serial communications with all CompoWay/F components.
• The CompoWay/F protocol conforms to OMRON’s standard FINS command protocol, providing compatibil-
ity with other networks and more flexible expansions in the future.
The CompoWay/F Master Protocol is provided as a standard system protocol to enable the CS/CJ-series PLC
to execute read/write sequences for CompoWay/F commands.
System Configuration for Standard System Protocol
RS-232C Connections
CS/CJ-series PLC: Host
CompoWay/F response
CompoWay/F command
RS-232C
OMRON CompoWay/F component: Slave
RS-422A/486 Connections
CS/CJ-series PLC: Host
CompoWay/F response
CompoWay/F command
RS-422A/485
OMRON CompoWay/F components: Slaves