Panasonic MEWNET-F, Technical Manual

Page: 115 / 168

9-5
[Example]
When "H8" is stored in DT9137(DT90137), it indicates a terminal station assignment error has occurred
on master 3 of the affected communication path.("8H" = "00000000 00001000"; Bit 3 (4) = "1")
Description CPU
operation Actions
①
Remote I/O communication error
Note1)
(Communication error
occurs in a slave station.)
Selection
Note2)
Check for a power interruption to a slave
station or for a disconnected communication
cable.
②
Communication error
Note1)
(Communication error occurs.)
Selection
Note2)
Make sure that the communication cable
length and slave station number have been
set correctly.
③
An illegal unit is installed on a
slave station
Halt Remove the illegal unit.
④
Remote I/O terminal station error Run
The setting of the terminal station for remote
I/O is incorrect.Correctly set the terminal
station again.
⑤
Excessive total number of slots
on a master unit
Halt
Observe the usage limits.
(Max. 64 slots)
⑥
Excessive total number of I/O
points on a master unit
Halt Observe the usage limits.
⑦
Power failure error in a slave unit
Note1)
Run Check the power supply system.
⑧
I/O attribute error on a slave
station where a slave unit is
installed
Note1)
Selection
Note2)
Verification error or error in an advanced unit,
etc Perform a check of the I/O unit.
Note1) You can determine on which slave station has produced the error.
Note2) You can select whether the CPU will halt or not when an error occurs by setting a system register.
Reference: <Chapter 7 Operation Modes for Controlling MEWNET-F>