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JC-IO USERS MANUAL EM-9044-B
3. I/O COMMUNICATION
3.1 Connection
JC-IO-N can define up to 32 connections (TCP connection) for the connection for I/O communication.
Refer to 4.4.3 C (Connection) for setting.
Table 11. Connection
FUNCTION
DESCRIPTION
No. of connection
max. 32 (C0 to 31)
Protocol
Select from Modbus/TCP or SLMP
Connecting Device
Set the IP address, and port number.
3.2 Output Conditions
The JC-IO-N updates the internal register when acquiring the input data from input connection or "manual
operation".
After the first update of the internal register, output connection starts outputting.
Internal register is not updated when a communication error is occurred after starting the communication.
In this case, keep outputting the latest input data before occurring the error to the output connection.
3.3 Communication Error Output
Communication error output is settable for each connection.
The data type of this output data is BIT.
Outputs 0 for normal operation, outputs 1 for abnormal operation, and when the communication error returns
to normal, the communication error output also returns automatically.
For this communication error output, use remote I/O modules installed on a highly reliable internal LAN.
Refer to 4.4.4 Communication Error Output for setting
.
