User`s manual

12-19
M-net (Master Station) Function
12
[3] Storing an error code in the system memory
When an M-net communication error occurs in the master station PC (JW-32CUM1), the following error
codes are stored in system memory locations starting at #170 and at #160 in the JW-32CUM1.
(1) Storing an error code in system memory address #170
When an error occurs in an M-net function, the error code (See pages 12-17 to 12-18) is stored in
system memory address #170 on the master station PC.
The error code which was stored in system memory address #170 is shifted up by one address
location, from #170 to #177, each time another error occurs. Up to 8 error codes can be recorded.
#177#176#175#174#173#172#171#170
89
9989
Disappeared
Error occurred on slave station 01 (slot 1)
Error occurred on slave station 03 (slot 1)
(2) Storing an error code in system memory address #160
When an error occurs in a master or slave modules, error code 53
(H)
(optional error) is stored in system
memory address #160.
When option error 53
(H)
occurs, the corresponding bit for the module No. switch setting on the error
module turns ON in system memory location #050. The each ON bit becomes OFF by recovering from
the abnormal condition. But the last ON bit does not become OFF even if the abnormal condition
recovers.
7
#050
6 5 4 3 2 1 0Bit
Setting
value 4
Setting
value 3
Setting
value 2
Setting
value 1
Setting
value 0
Setting
value 5
- When an error occurs in the JW-32CUM1 (M-net section), bit 0 (set value: 0) turns ON.
- Bits 1 to 5 correspond to the values set with the JW-21CM module No. switch.