Sharp JW-20CM - Manual (Page 87)

8 · 49
Replace the JW-20RS
• Check the communication cable
• Replace the JW-20RS
Check the communication
cable
• Reinput the power
• Decrease load of slave station
• Check the communication cable
• Replace the JW-20RS
• Check I/O module,
option cables
Remarks
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
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
Synchronization between master and slave
station is deviated
EEPROM error
I/O bus error
I/O signal error
Mismatch number of I/O points
Interrupted data from master station
Defected power failure at I/O processing
Master station PC error
BCC error
Parameter setting error
S7 6 5 4 3 2 1
Measure Cause
Replace the JW-20RS
S0
01
(H)
02
(H)
03
(H)
04
(H)
11
(H)
13
(H)
18
(H)
20
(H)
21
(H)
22
(H)
23
(H)
2A
(H)
2B
(H)
2C
(H)
2E
(H)
30
(H)
90
(H)
91
(H)
92
(H)
93
(H)
94
(H)
95
(H)
9E
(H)
9F
(H)
Error
code
(HEX)
Check the communication
cable and master module
Check power supply
Check master station PC,
master module, or
communication cable
Check parameter contents
LED name
• Check the communica-
tion cable
• Check for doubled allocation
of slave station number
• Replace the JW-20RS
• Occurs because of a media execution
error or noise from outside.
ON, OFF
• Error codes “23” and “2A
(H)
” may occur when applying power. This is not an error.
• To check the communication cable, remove both connectors and short the connector terminals
at one end. Then measure the conductivity using a tester.
• Check the parameter and switch settings for all stations. If the settings are correct, replace
the JW-20CM or JW-20RS.
(Error code)
•