Controlling Operation and Outputting Data with FINS/TCP No-protocol Commands
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FQ2 User’s Manual
9-5 Controlling Operation and Outputting Data with FINS/TCP No-protocol Commands
Introduction to FINS Commands
FINS is a communications command system for a message service that is commonly used on OMRON
networks.
Data can be sent and received and various controls, such as changing the operating mode, setting/resetting
bits, and file operations, can be performed when necessary.
For details on FINS command specifications, the commands that are sent from a CPU Unit, and other
information, refer to the SYSMAC CS/CJ/CP/NSJ Series Communications Commands Reference Manual (Cat.
No. W342).
Range for Receiving FINS Commands
The FQ2 can receive FINS commands that are sent by an OMRON CPU Unit on the same Ethernet network.
The FQ2 can send responses to the received commands to the CPU Unit that sent the commands.
The FQ2 cannot receive FINS commands from any networks other than Ethernet or from devices on networks
to which the FQ2 is not directly connected.
Sending FINS Commands
A special instruction for sending commands, the CMND instruction, is used to send FINS commands from the
CPU Unit.
If you specify the FINS command code to send in the CMND instruction, the CPU Unit will attach the FINS
header and send the FINS command frame.
When the CPU Unit receives the response from the Sensor, it automatically removes the FINS header and
stores only the response data in the memory location that is specified in the CMND instruction.
Refer to the SYSMAC CS/CJ/CP/NSJ Series Communications Commands Reference Manual (Cat. No. W342)
for more information on sending FINS commands with the CMND instruction.
Ethernet
FQ2
Ethernet Unit
CPU Unit
FINS command
addressed to FQ2
Response
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