MAXA HWA1-A 0140, Manual

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HWA1-A
Air/water chillers with axial fans
26
H125 : PARITY, STOP BIT
0 NONE, 2 bit
1 ODD, 1 bit
2 EVEN, 1 bit
3 NONE, 1 bit
H126 : DEVICE ID 1 ÷ 200
Modbus comands:
READING
HOLDING
REGISTER
WRITING 6-16
Register Format Bit R/W Range Name Description Note
1 INT - R -
Data version
Firmware version
2 INT - R - Firmware release
3
BYTE (H) - R - Firmware sub-release
BYTE (L) - R - Firmware creation day
4
BYTE (H) - R - Firmware creation month
BYTE (L) - R - Firmware creation year
80 ÷ 97 ASCII - R - Serial number Registration number
1089 INT - R/W 1 ÷ 200 Serial address Modbus serial ID
200 INT
- R -
Machine setting
(0) Stand by
Reading values of the machine
status
- R - (1) Cooling
- R - (2) Heating
- R - (4) Only sanitary mode ¹
- R - (5) C Sanitary ¹
- R - (6) H Sanitary ¹
7201 BIT MASK 0 R/W -
Enablement of writing the machine
status remotely
Necessary for the operation of the
reg. 7200.
7200 INT
- W - (0) Stand by
The writing values that are not
allowed at this address can lead to
unexpected operations, so keep
only those values that are allowed
in writing.
- W - (1) Cooling
- W - (2) Heating
- W - (4) Only sanitary¹
- W - (5) C Sanitary¹
- W - (6) H Sanitary¹
7201 BIT MASK 1 R/W -
Setpoint
Enablement of writing the setpoint
remotely
Necessary for the operation of the
reg. 7203/7208.
7203 °C/10 - R/W 5.0 ÷ 23.0 Cooling
7204 °C/10 - R/W 25.0 ÷ 55.0 Heating
7205 °C/10 - R/W 25.0 ÷ 55.0 Sanitary
7206 °C/10 - R/W 5.0 ÷ 23.0 Second cooling
7207 °C/10 - R/W 25.0 ÷ 55.0 Second heating
7208 °C/10 - R/W 0.0 ÷ 80.0 DHW preparer
7201 BIT MASK 2 R/W -
Second setpoint
Enabling the switching to the second
setpoint
Necessary for the operation of bit
0 of reg. 7202.
7202 BIT MASK 0 W - 0=primary setpoints, 1=secondary setpoint Writing value
7217 BIT MASK 0 R - 0=primary setpoints, 1=secondary setpoint Reading value
7201 BIT MASK 3 R/W -
Room
temperature call
Enablement of remote room call writing
Necessary for the operation of bit
1 of reg. 7202.
7202 BIT MASK 1 R/W - Forced room temperature call remotely
7201 BIT MASK 4 R/W -
Sanitary call
Enablement of remote sanitary call
writing
Necessary for the operation of bit
2 of reg. 7202.
7202 BIT MASK 2 R/W - Forced remote sanitary mode call
7201 BIT MASK 5 R/W -
Anti-Legionella ²
Enablement of anti-legionella cycle
remotely
Necessary for the operation of bit
3 of reg. 7202.
7202 BIT MASK 3 R/W -
Remote anti-legionella cycle request
activation
The bit must be 1 for the entire
cycle period.
7216 BIT MASK
5
R -
Anti-legionella cycle in progress
6 Anti-legionella cycle failed or stopped
It remains at 1 until the next cycle,
or it resets itself when the board is
turned off.
7202 BIT MASK 5 R/W - Plant air-vent Forced pant air-vent Only if the machine is in Stand By (0).