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HA71 Digital Gas Controller
Alarm status words are bits packed into 16 bit integer where lsb = channel 1 alarm status and msb = channel 16 alarm status.
Alarm status (bit = 1 indicates alarm is active):
Alarm 1 Status
Alarm 2 Status
Alarm 3 Status
*Relay Status
*Note:
Common Relay status bits (register 31036) are as follows.
Relay 1= bit0.
Relay 2= bit1
Fault Relay = bit2
Horn Relay = bit3
Alarm LED flashing status (bit = 1 indicates LED is flashing; "Acknowledge" clears all to 0):
LCD Display Screen Displayed Integer:
Coils:
Notes:
Set this coil to issue an alarm "Acknowledge" via Modbus
Alarm Reset
HA71 Technical Manual
Type
Channel
First
1-16
31033
1-16
31034
1-16
31035
n/a
31036
Type
Channel
First
Alarm 1 Status
1-16
31049
Alarm 2 Status
1-16
31050
Alarm 3 Status
1-16
31051
Type
Channel
LCD Screen
n/a
Type
Channel
First
n/a
2001
Last
Read FC
Write FC
n/a
4
n/a
4
n/a
4
n/a
4
Last
Read FC Write FC
n/a
4
n/a
4
n/a
4
First
Last
Read FC Write FC
31053
n/a
4
®
.
Last
Read FC
Write FC
n/a
n/a
5
5-6
Notes
n/a
packed 16bit integer
n/a
packed 16bit integer
n/a
packed 16bit integer
n/a
packed 16bit integer
Notes
n/a
packed 16bit integer
n/a
packed 16bit integer
n/a
packed 16bit integer
Notes
n/a
8bit integer
Notes
write 0xff to high byte to set
Revision 3 (04/08)
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