Nortec Modbus User Manual
Page 26

The following points may be mapped for control:
Variable
Name
Description
Addr
Type
Format Range
Unit
R/W
Additional Details
RHDem1
Write RH or
Demand signal
value to control
channel 1
40264 Holding
Register
Analog
0-100
%
Write
Requires network
controls
(NetSensor = 1)
RhDem2
Write RH or
Demand signal
value to control
channel 2
40265 Holding
Register
Analog
0-100
%
Write
Requires network
controls
(NetSensor = 1)
Set1
Writes the
desired space
setpoint for
control channel 1
40024 Holding
Register
Analog
30-95
%
Write
Use only when
sending RH value
to RHDem1
Set2
Writes the
desired space
setpoint for
control channel 2
40025 Holding
Register
Analog
30-95
%
Write
Use only when
sending RH value
to RHDem2
Disable
Remotely
disables the
humidifier
40262 Holding
Register
Analog
0, 255
-
Write 0 = Run
255 = Disable
InputType
Selects the
control type that
the humidifier
operates on
40007 Holding
Register
Analog 0,1,2,3
,
-
Write
0 = Demand Signal
1 = On/Off Signal
2 = RH Sensor
Value (Use
Proportional
Control)
3 = RH Sensor
Value (Use
Proportional-
Integral Control)
NetSensor
Switches
between hard
wired or network
control signal
40226 Holding
Register
Binary
0,1
-
Write
0 = Hard wired
control signal
1 = Use Modbus to
write control signal
value
RHDem1
Read RH or
Demand signal
value from
control Channel
1
30348
Input
Register
Analog
0-100
%
Read
Displays signal
value as a
percentage
RHDem2
Read RH or
Demand signal
value from
control Channel
2
30349
Input
Register
Analog
0-100
%
Read
Displays signal
value as a
percentage
Set1
Read space
setpoint for
control channel 1
40024
Input
Register
Analog
30-95
%
Read Only available for
InputType 2 or 3
Set2
Read space
setpoint for
control channel 2
40025
Input
Register
Analog
30-95
%
Read Only available for
InputType 2 or 3
Disable
Confirms remote
disable status
30989
Input
Register
Analog
0, 255
-
Read 0 = Run
255 = Disable
Modbus Installation | 23