Instruction manual

6. MODBUS COMMUNICATION PROTOCOL
IMR01H02-E3
58
Continued form the previous page.
Name Data range Factory set
value
Attri-
bute
Alarm 1 ! Process alarm, SV alarm
1
:
Same as input range
Deviation alarm
1
: -span to +span
(Within -1999 to +9999 digits)
Control loop break alarm (LBA):
0.0 to 200.0 minutes (0.0: LBA OFF)
Temperature input:
50 or 50.0
Voltage input: 5.0
Control loop break
alarm: 8.0
R/W
2
Alarm 2
3
Process alarm, SV alarm
1
:
Same as input range
Deviation alarm
1
: -span to +span
(Within -1999 to +9999 digits)
Heater break alarm 1 (HBA1):
0.0 to 100.0 A (0.0: HBA1 OFF)
Temperature input:
50 or 50.0
Voltage input: 5.0
Heater break alarm 1:
0.0
R/W
4
Alarm 3 ! Process alarm, SV alarm
1
:
Same as input range
Deviation alarm
1
: -span to +span
(Within -1999 to +9999 digits)
Temperature input:
50 or 50.0
Voltage input: 5.0
R/W
5
Heater break alarm 2
(HBA2)
(This item does not use
in the MA901.)
0.0 to 100.0 A
(0.0: HBA2 OFF)
0.0 R/W
6
Used/unused of
channels !
0: Unused
1: Used for only alarm
2: Used for control and alarm
2R/W
1
Process alarm = Process high alarm, Process low alarm, Process high alarm (with hold action),
Process high alarm (with hold action)
SV alarm = SV high alarm, SV low alarm
Deviation alarm = Deviation high alarm, Deviation low alarm, Deviation high/low alarm, Band
alarm, Deviation high alarm (with hold action), Deviation low alarm (with hold
action), Deviation high/low alarm (with hold action)
2
When the alarm 1 is FAIL alarm, attributes become RO (read only).
3
When the alarm 2 corresponds to heater break alarm 1 (HBA1), becomes communication data not
corresponding to the memory area.
4
When there is not alarm 2, attributes becomes RO (read only).
When the alarm 2 is FAIL alarm, attributes become RO (read only).
5
When there is not alarm 3, attribute becomes RO (read only).
When the alarm 3 is FAIL alarm, attributes become RO (read only).
6
When the alarm 2 is other than heater break alarm 1 (HBA1), attributes become RO (read only).
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