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(4) Error history
When the JW-21MN has errors, it stores them in an error history register. The storage area is
specified using the module No. switch setting value.
Module No. switch
setting value
The storage area for the error history (128 bytes) is divided into 8 sections (16 bytes each). The
JW-21MN stores up to 8 errors, in the order they occurred. If a ninth error occurs, the oldest error
data will be deleted.
Register
address *3
E1200
E1220
E1240
E1260
E1300
E1320
E1340
E1360
E1377
Details of the data for each error (16 bytes) are as follows.
12
Address (*4)
n+0 (E1200)
n+1 (E1201)
n+2 (E1202)
n+3 (E1203)
n+4 (E1204)
n+5 (E1205)
n+6 (E1206)
n+7 (E1207)
n+8 (E1210)
n+9 (E1211)
n+10 (E1212)
n+11 (E1213)
to
n+15 (E1217)
*4: When the top address is "E1200."
Error history storage register
JW20/JW20H
0
E1400 to E1577
1
E1200 to E1377
2
E1000 to E1177
3
E0600 to E0777
4
E0400 to E0577
5 *2
E0200 to E0377
E0000 to E0177
6 *2
Prohibited setting
7 to 9
1st error
2nd error
1st
0 0
8th
0 0
7th
0 0
0 0
0 0
6th
0 0
5th
0 0
0 0
0 0
4th
0 0
3th
0 0
0 0
0 0
2nd
1st error is deleted.
Details
Second
Minute
Hour
Date
Month
Year
Day of week
Error code
Number of errors
that have occurred
JW30H *1
E7400 to E7577
E7200 to E7377
E7000 to E7177
E6600 to E6777
E6400 to E6577
E6200 to E6377
E6000 to E6177
9th error
*3: The register address on the left is correct when the
JW20H is used and the Module No. switch is set to
"1."
- When a JW-21CU/31CUH/31CUH1 is
used for the control module of a
JW20/20H/30H, ignore data from bytes 1
Date and time
to 7.
error occurred
(Since the JW-21CU/31CUH/31CUH1 do
not have a clock function, they cannot
store this data correctly.)
- Stores the error code (value of #170).
JW-21MN
- See page 12-6.
error code
- When the same error occurs, the JW-
21MN will count up to 377
400
, the number of errors will stay at
(8)
000 to 377
(8)
377
. (The date and time the error
(8)
occurred is the date and time the error
occurred for the first time.)
12-8
*1: When the JW30H is used,
system memory should be set
to #210 = 002
.
(8)
*2: Setting the module No. switch
to "5" or "6" is only valid when
the model switch on the JW-
21MN is set to "2."
Remarks
. From error
(8)
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