Remote I/O Control When An Error Occurs - Panasonic MEWNET-F Technical Manual

7.2 Remote I/O Control When an Error Occurs

The operation can be selected when an error occurs on [MEWNET-F].
Two types of error may occur in the remote I/O system.
Communication error
The master station and any slave station cannot communicate with each other. This may occur because
the slave station is not turned on, or the communication cable may not be wired correctly.
Error occurs in the unit connected to a slave station system
When an input/output unit or advanced unit connected to the system where a slave unit is installed has
produced an error because of a unit hangs or a system error, the error is detected.
You can check the operaiton status when an error occurs by examining the combination of the system
registers in the CPU and the mode selector switches on the master unit.
System register No. 27
CPU
System register No. 28
Mode selector switch
Master unit FP2 Multi-wire Link Unit: SW1
FP3 Master unit: SW7
Mode selector switch
Slave station FP2 Remote I/O Slave Unit: SW1
Other slave stations: SW3
Type Setting
Operation status when a communication
error occurs
Operation status when any unit on the
slave station has an error
Remote I/O Control When an Error
Occurs
Output status off the slave station when a
communication error occurs
Not hold (OFF)
7-3