Software functions
7-5
7.1.1.6 Error history
Up to eight entries of error history that occurred in the past are displayed.
Error history can be cleared by resetting the power.
Modbus/TCP address
Data
Memory address
Offset address
Upper byte
Lower byte
30257 256
No.1
Year
(Last two digits of Western year
format ex: Year xx13 = 0x0D)
Month
(ex: August = 0x08)
30258 257
Day
(ex: 30th day = 0x1E)
Hour
(ex: 13:00 = 0x0D)
30259 258
Minute
(ex: 26 minutes = 0x1A)
Second
(ex: 21 seconds = 0x15)
30260
259
Error history No.1 target ID
30261
260
No.1 error flag
30262 261
No.2
Year
(Last two digits of Western year
format ex: Year xx13 = 0x0D)
Month
(ex: August = 0x08)
30263 262
Day
(ex: 30th day = 0x1E)
Hour
(ex: 13:00 = 0x0D)
30264 263
Minute
(ex: 26 minutes = 0x1A)
Second
(ex: 21 seconds = 0x15)
30265
264
Error history No.2 target ID
30266
265
No.2 error flag
: :
: :
:
30292 291
No.8
Year
(Last two digits of Western year
format ex: Year xx13 = 0x0D)
Month
(ex: August = 0x08)
30293 292
Day
(ex: 30th day = 0x1E)
Hour
(ex: 13:00 = 0x0D)
30294 293
Minute
(ex: 26 minutes = 0x1A)
Second
(ex: 21 seconds = 0x15)
30295
294
Error history No.8 target ID
30296
295
No.8 error flag
The relationship between error flags and data memory is as follows.
Modbus/
TCP address
Data
15 14
13 12 11
10
9
8
7
6
5
4
3
2
1
0
(Applicable
locations)
15 14
13 12 11
10
9
8
7
6
5
4 3 2 1 0
Bit
Error content
"ERR" LED status
Remarks
0
ON: Short-circuit between DP
and DN
OFF: Normal
Slow flashing
Turns ON when there is a short-circuit
between DP-DN.
Turns OFF when the erroneous state is
canceled.
This state is not retained.
1
Reserved
-
-
2
ON: 24V voltage drop
OFF: Normal
Quick flashing
Turns ON when 24V voltage drops (approx.
19V).
Turns OFF when the erroneous state is
canceled.
This state is not retained.
3
ON: Disconnection or failure
of the unit
OFF: Normal
Lit
This state is retained until the power is
turned off or the error is cleared.
4 to 15 Reserved
-
-
