Modbus for residential D24810 User manual(A007)
Table Of Contents
- 1 Introduction
- 2 Transmission modes
- 3 Physical layer
- 4 Address
- 5 Notes
- 6 Wiring
- 7 Modbus variable list
- 7.1 Registers for fan control
- 7.2 Registers for heater control
- 7.3 Registers for the damper
- 7.4 Registers for the rotor
- 7.5 Registers for RH sensor
- 7.6 Registers for the week program
- 7.7 Registers for system parameters
- 7.8 Registers for clock
- 7.9 Registers for the filter
- 7.10 Registers for VTC defrosting
- 7.11 Register for VR/VTR defrosting
- 7.12 Registers for the digital inputs
- 7.13 Registers for PCU-PB
- 7.14 Registers for alarms
- 7.15 Register for demand control
- 7.16 Register for wireless network
- 7.17 Registers for RH transfer control
7.15Registerfordemandcontrol
NameRegister
address
RorR/W
NVMAccess
(Reg./Coil)
Description/remarks
REG_DEMC_CO2_SP
851
R/W
RegRange:0-2000
0:Off
REG_DEMC_CO2_P_BAND
852
R/W
RegRange:1-2000
REG_DEMC_CO2_I_TIME
853
R/W
RegRange:1-120
0:nointegration
REG_DEMC_RH_SP_SUMMER
854
R/W
RegRange:0-100
0:Off
Note:oldregistername(before
PCU-EC4programversion5.09.00)is
REG_DEMC_RH_SP
REG_DEMC_RH_P_BAND
855
R/W
RegRange:1-100
REG_DEMC_RH_I_TIME
856
R/W
RegRange:1-120
0:nointegration
REG_DEMC_STATE
857RReg
0:Startup
1:Waitingforsensornetwork
2:Waitingforsensordata
3:Automode
4:normalmode
REG_DEMC_MODBUS_CO2_VALUE
858WRegValueinppm.Range:0-2000.
REG_DEMC_MODBUS_RH_VALUE
859WReg
Valuein%.Range:0-100.
REG_DEMC_MODBUS_CO2_OUT
860RReg
OutputofPIcontrollerforCO2regulation.
REG_DEMC_MODBUS_RH_OUT
861RReg
OutputofPIcontrollerforRHregulation.
REG_DEMC_ALLOWED
862RReg
Indicatesifautomodecanbeset(based
onsensordataanddemandcontrolset
points).
Bit0:
0:Automodecannotbeactivated
1:Automodecanbeactivated
Bit1-15:notused.
REG_DEMC_RH_SP_WINTER
863
R/W
RegRange:0–100
RegisterintroducedinPCU-EC4program
version5.09.00.
REG_DEMC_SUMMER_WIN-
TER_MODE
864RReg
0:Summer
1:Winter
RegisterintroducedinPCU-EC4program
version5.09.00.
REG_DEMC_SUMMER_WIN-
TER_CNTR_H
865RReg
Highest16bitsofremainingtimeuntil
summermode.
REG_DEMC_SUMMER_WIN-
TER_CNTR_H
866RReg
Lowest16bitsofremainingtimeuntil
summermode.
ModbusforResidentialunitsUserManual
D24810
16
SystemairSverigeAB