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12-8
(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.
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.
Details of the data for each error (16 bytes) are as follows.
*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."
*3: The register address on the left is correct when the
JW20H is used and the Module No. switch is set to
"1."
Module No. switch
setting value
Error history storage register
JW20/JW20H JW30H *1
0 E1400 to E1577 E7400 to E7577
1 E1200 to E1377 E7200 to E7377
2 E1000 to E1177 E7000 to E7177
3 E0600 to E0777 E6600 to E6777
4 E0400 to E0577 E6400 to E6577
5*2
E0200 to E0377 E6200 to E6377
6*2
E0000 to E0177 E6000 to E6177
7to9
Prohibited setting
0 0
0 0
0 0
0 0
0 0
0 0
0 0
1st
0 0
0 0
0 0
0 0
0 0
0 0
8th
7th
6th
5th
4th
3th
2nd
1st error
2nd error
9th error
E1200
E1220
E1240
E1260
E1300
E1320
E1340
E1360
E1377
1st error is deleted.
Register
address *3
Error history storage area
*4: When the top address is "E1200."
Address (*4) Details
Remarks
n+0 (E1200) Second
Date and time
error occurred
-
When a JW-21CU/31CUH/31CUH1 is
used for the control module of a
JW20/20H/30H, ignore data from bytes 1
to 7.
(Since the JW-21CU/31CUH/31CUH1 do
not have a clock function, they cannot
store this data correctly.)
n+1 (E1201) Minute
n+2 (E1202) Hour
n+3 (E1203) Date
n+4 (E1204) Month
n+5 (E1205) Year
n+6 (E1206) Day of week
n+7 (E1207) Error code
JW-21MN
error code
- Stores the error code (value of #170).
- See page 12-6.
n+8 (E1210)
n+9 (E1211)
n+10 (E1212)
Number of errors
that have occurred
000 to 377
(8)
- When the same error occurs, the JW-
21MN will count up to 377
(8)
. From error
400
(8)
, the number of errors will stay at
377
(8)
. (The date and time the error
occurred is the date and time the error
occurred for the first time.)
n+11 (E1213)
to
n+15 (E1217)