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D2-3
IM 34M06H63-01E
1st Edition : July, 2003-00
(2) The ALM or ERR LED indicator is lit or flashing
If the ALM or ERR LED indicator is lit or flashing, an alarm or error has been detected. An
input circuit may be incorrectly connected, or the self-diagnosis function may have
detected an internal error. Follow the steps below to locate the cause.
- All channels with no sensor connected should be set to Disabled mode.
- For a channel set for DC voltage input, no signal connection must be made to the NC
terminals, as shown in Section A4.3.2, "Terminal Wiring Diagram."
- Check that register preset values are appropriate. See the table below.
Data Position Number
Symbol
Content
Check Items
See Also
CH1
CH2 CH3 CH4
83
MD12
Monitoring mode
All channels with no sensor connected must
be set to Disabled mode.
C1.
84
MD34
102 302 502
702
PV
Process value
Are values proper?
C2.
107 307 507
708
CSPNO
Current SP number
Is CSPNO correctly set? Are alarm settings
correct?
C3.
108 308 508
708
RUN.STUS
Operating status
Is bit 15 set? If so, check ERR.STUS.
C5.
109 309 509
709
ALM.STUS
Alarm status
Is any of bits 0-3 set? If so, check the
corresponding alarm type, alarm setting, and
alarm hysteresis.
C3.
110 310 510
710
ERR.STUS
Error status
Is any bit set? If so, check the indicated cause.
C5.
202 402 602
802
1.A1
Alarm 1 preset value
If an alarm is detected, check each setting.
C3.
203 403 603
803
1.A2
Alarm 2 preset value
204 404 604
804
1.A3
Alarm 3 preset value
205 405 605
805
1.A4
Alarm 4 preset value
222 422 622
822
2.A1
Alarm 1 preset value
223 423 623
823
2.A2
Alarm 2 preset value
224 424 624
824
2.A3
Alarm 3 preset value
225 425 625
825
2.A4
Alarm 4 preset value
242 442 642
842
3.A1
Alarm 1 preset value
243 443 643
843
3.A2
Alarm 2 preset value
244 444 644
844
3.A3
Alarm 3 preset value
245 445 645
845
3.A4
Alarm 4 preset value
262 462 662
862
4.A1
Alarm 1 preset value
263 463 663
863
4.A2
Alarm 2 preset value
264 464 664
864
4.A3
Alarm 3 preset value
265 465 665
865
4.A4
Alarm 4 preset value
281 481 681
861
AL1
Alarm 1 type
282 482 682
862
AL2
Alarm 2 type
283 483 683
863
AL3
Alarm 3 type
284 484 684
884
AL4
Alarm 4 type
285 485 685
885
HY1
Alarm 1 hysterisis
286 486 686
886
HY2
Alarm 2 hysterisis
287 487 687
887
HY3
Alarm 3 hysterisis
288 488 688
888
HY4
Alarm 4 hysterisis
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