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Remarks
• The error code stored in the system memory #170 is shifted to #170 to #177 one after the other as new
errors occur. Thus, the system memory can store up to 8 errors. When the PC is operating by RAM,
these error codes do not disappear even after turning OFF the power.
The contents of system memory #170 to #177 are kept storing after the JW-20CM recovers from the
error.
#177
Disappear
• When any of errors "01
20CM stores error code "53
code in system memory #170.
• In the case of an option error "53," when you monitor system memory #050, the bit of error option
module switches ON. When more than 1 bit is error, these bits switch ON. The each ON bit becomes
OFF by recovering from the error condition. But the last ON bit does not become OFF even if the error
condition recovers.
#050
Port 7 error
• The option slot port numbers are assigned in the order 2, 3, 4, 5, 6, 7, and so on, starting from the
position closet to the control module.
(Ex.: JW-13BU)
Control module
#176
#174
#173
#175
" to "18
" occurs among the error codes listed on the previous page, the JW-
(H)
(H)
" (optional error) in the system memory #160. It does not store any error
(H)
7
6
5
Port 6 error
Port 4 error
Port 5 error
② ③ ④ ⑤ ⑥ ⑦
▲
8
#172
#171
#170
Occurrence of BCC error
6E
Occurrence of parameter
6E
6F
setting error
4
3
2
Port 2 error
Port 3 error
Port number
53
·
1
0
8
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