Sharp JW-20CM User Manual page 90

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