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61
11 - OPTION
STATUSES, PROBES, ALARMS, CONTROLS
11.8 MODBUS PROTOCOL
Error on one of the probes (value higher than the
expected operating range). This is indicated with the
specific probe error code = 0x7fff.
When the relative parameter reports that there is no
probe, this is indicated with the no probe code = 0x7ffe
(it does not appear in the local probes value, but in the
value related to the operating probes).
STATUS AREA
Modbus
Address
(decimal)
rd
: read
wr
: write
Description
Unit
2000
rd
Warm setpoint
°C/10
2001
rd
Cold setpoint
°C/10
2002
rd
Current setpoint (return)
°C/10
2007
rd
Number of compressors on
no.
2011
rd
Active control status of supply
air quality
no. (0-1)
2013
rd
External bypass damper status
no. (0-1)
2015
rd
Free-cooling status
no. (0-1)
2016
rd
Free-heating status
no. (0-1)
2017
rd
Fan status set to silent
no. (0-1)
2018
rd
Supply fan control signal
%
2020
rd
Return fan control signal
%
2022
rd
On-off humidifier status
no. (0-1)
2023
rd
Humidifier control signal
%
2024
rd
On/off status (local)
no. (0-1)
2025
rd
Heat/cool machine mode
no. (0-1)
2026
rd
(Eco status –
off
)
no. (0-1)
2027
rd
Ventilation-only active status
no. (0-1)
2030
rd
Operating statuses bitmaps
bitmap
2031
rd
2 operating statuses bitmaps
bitmap
2032
rd
(Operating) return temperature
°C/10
2033
rd
Supply temperature (mean
value)
°C/10
2034
rd
Fresh air temperature
°C/10
2035
rd
Supply humidity
%
2036
rd
(Operating) return humidity
%
2044
rd/wr
Compressor1 hours of operation no.
2046
rd/wr
Compressor1 start-ups
no.
2050
rd
Statuses1 bitmaps (compressor
and assoc. circ. mix)
bitmap
2052
rd
Alarms bitmap 1
bitmap
2053
rd
Alarms bitmap 2
bitmap
2054
rd
Alarms bitmap 3
bitmap
2068
rd
Ambient air enthalpy value
hAmb
0.1 Kcal/
Kg
CONVENTIONAL CODES FOR THE PROBES
Statuses1-2 bitmaps (compressor and assoc. circ. mix)
Posit.
meaning
mask
bit
0
Compressor timing in progress
0x01
bit
1
Compressor on
0x02
bit
2
Excited reverse valve
0x04
bit
3
-------
0x08
bit
4
-------
0x10
bit
5
Fan di mandata acceso
0x20
bit
6
-------
0x40
bit
7
-------
0x80
Bitmap 1 alarm (probe)
Posit.
meaning
mask
bit
0
External air temperature probe failure
0x01
bit
1
---------
0x02
bit
2
Supply temperature probe failure
0x04
bit
3
Return temperature probe failure (local or
from thermostat or from serial device)
0x08
bit
4
Return humidity probe failure (local or from
thermostat or from serial device)
0x10
bit
5
---------
0x20
bit
6
---------
0x40
bit
7
---------
0x80
bit
8
---------
0x0100
bit
9
Supply humidity probe failure
0x0200
bit
10
Suction pressure probe/exhaust coil failure
0x0400
bit
11
---------
0x0800
bit
12
---------
0x1000
bit
13
---------
0x2000
bit
14
---------
0x4000
bit
15
---------
0x8000
Содержание Airflow 2020
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