Table 6B. Modbus Registers - Airxcel CEA1012A Installation & Operation Manual

Read with Function Code 04, Write to RW or WO registers with Function Code 06
ID
1 Heat Setpoint
2 Cool Setpoint
3 Temperature Calibration
4 W2 Speed Multiplier
5 Dehumidification Speed Multiplier
6 OFM Set Speed
7 IFM Y1 Set Speed
8 IFM Y2 Set Speed
9 Modbus Timout Setting
10 Current OFM Speed
11 Current IFM Speed
12 Anti Short Cycle Compressor 1
13 Anti Short Cycle Compressor 2
14 Voltage Reading
15 P1 Temperature Reading
16 P2 Temperature Reading
17 Freeze Sensor 1 Temperature Reading
18 Freeze Sensor 2 Temperature Reading
19 Alarm Status
ICE CEA/CGA1012–1060 Wall Mount AC I&O Manual
03/2021 Rev.1
Registers:
Description

Table 6b. MODBUS Registers

28
Size Data Format
16 Bit 45º-100º F
16 Bit 45º-100º F
0-20, 10 is default. Less
16 Bit than 10 is a negative offset,
11-20 is a positive offset
0-100, 80 is default.
16 Bit Represents a percentage of
the Y2 fan speed
0-100, 80 is default.
16 Bit Represents a percentage of
the Y2 fan speed
16 Bit 0 - 1023
16 Bit 0 - 1023
16 Bit 0 - 1023
1 - 60, default 25;
represents minutes of
16 Bit allowed MODBUS inactivity
before switching to onboard
T-Stat mode
16 Bit 0 - 1023
16 Bit 0 - 1023
16 Bit 0 - 360, 0.5 sec. per step
16 Bit 0 - 360, 0.5 sec. per step
0 - 1023
16 Bit 1023 = Greater than 20V
965 = 18V cutoff
16 Bit 0º-160º F
16 Bit 0º-160º F
16 Bit 0º-160º F
16 Bit 0º-160º F
0 = No Fault
1 = Future Use
2 = HPS1 Fault
3 = Future Use
4 = HPS2 Fault
5 = Future Use
6 = Future Use
7 = LPS1 Fault
8 = LPS2 Fault
16 Bit
9 = Future Use
10 = Future Use
11 = Future Use
12 = Future Use
13 = Freeze Fault 1
14 = Freeze Fault 2
15 = Y1 Locked Out
16 = Y2 Locked Out
17 = Low Voltage
R/W
RW
RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO