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8·52
Error code stored to system memory
#170
#160
53(H)
Cause
Measure
Replace the JW-20CM
Replace the JW-20CM
Check the communication
cable and slave module
Error
code
(HEX)
Check the communication cable
Check the switch setting
Replace the JW-20CM
FF
•
After converting into octal, the lower two digits
represent the slave station number of the current
error. (Ex. C1(H) = 301(8)= slave station 01)
• Check the communication
cable
•
Check for doubled allocation
of slave station number
• Replace the JW-20CM
Check the parameter setting
and switch
(3) Error code
When an error occurs in the JW-20CM, it stores the occurred error’s code to system memory #170
of each station’s PC.
01 ROM error, upper CPU
02 RAM error, upper CPU
03
2 port RAM error against PC, upper CPU
04 2 port RAM error against
communication CPU, upper CPU
11 ROM error, communication CPU
12 RAM error, communication CPU
18
Communication LSI error, communication CPU
1F No response
20 More than one token detected
21 Doubled address detected
22 Fault of sending section
23
Token does not return within the rated interval
2A
Overflow of receiving buffer.
Occurs when the upper CPU processing is delayed.
2B Flame length error
2C Media error
30 EEPROM error
BE BCC error
BF Parameter setting error
C1 Communication error
• In some cases, error code 23(H) or 2A(H) is stored when inputting power. This is not an error.
Check the communication cable
Replace the JW-20CM
to
1F (H)
20 (H)
21 (H)
22 (H)
23 (H)
2A (H)
2B (H)
2C (H)
30 (H)
BE (H)
BF (H)
C1 (H)
to
FF (H)