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JC-IO USERS MANUAL EM-9044-B
6. USAGE EXAMPLES
6.1 I/O Transmission (IP telemeter)
Connect remote I/Os in remote locations via the internet and use JC-IO-N as an IP telemeter.
In the following figure, capture the alarm signal in the factory by the remote I/O and indicate it with the tower
light at the remote location.
Figure 30.
JC-IO-N
R7E
Internet
Modbus/TCP
IT40SRE
Usage Example (I/O Transmission)
6.2 I/O Extension of PLC
Normally, adding communication-related instruction to the PLC program is needed to extend the I/O of the
PLC.
JC-IO has possibility to greatly simplify this process.
Figure 31.
Modbus/
TCP
Remote I/O
Modbus/
TCP
Usage Example (I/O Extension of PLC)
PROCESS
PROCESS OF THE PLC PROGRAM
PROCESS OF THE JC-IO-N
Data input
Read out the input value from the PLC.
Write the input data read out from the remote
I/O to the PLC.
Data output
Write the output value to the PLC.
Write the output data read out from the PLC
to the remote I/O.