Nortec Modbus User Manual
Page 44
The following points may be mapped for control:
Variable
Name
Description
Addr
Type
Format Range
Unit R/W
Details
CapLimit
Set a manual
capacity restriction
for the humidifier
40006 Holding
Register Integer 50-100 %
Write
Limits output to
percentage of total
capacity
RHDem
Write RH or Demand
signal value to
humidifier
40038 Holding
Register Integer 0-100
%
Write Requires network
controls (NetSensor = 1)
Set
Writes the desired
space setpoint
when using sensor
controls
40024 Holding
Register Integer 30-95
%
Write Use only when sending
RH value to RHDem
NetSensor
Switches between
hard wired or
network control
signal
40039 Holding
Register Integer 0,1
-
Write
1 = Use Modbus to write
sensor or demand value
0 = Hard wired sensor or
wired demand signal
RHDem
Read RH or Demand
signal value from
humidifier
40008 Input
Register Integer 0-100
%
Read Used with hardwired or
network control signal
Set
Read space setpoint
(sensor type
controls only)
40024 Input
Register Integer 30-95
%
Read Sensor controls only, not
for demand type controls
CapLimit
Reads the manual
capacity restriction
for humidifier
40006 Input
Register Integer 50-100 %
Read Adjust using writeable
CapLimit variable
NetSensor Confirms humidifier
control mode
40039 Input
Register Integer 0,1
-
Read
1 = Use Modbus to write
sensor or demand value
0 = Hard wired sensor or
wired demand signal
SysDeman
d
Read system ouput
/ demand
40007 Input
Register Integer 0-100
%
Read Displays output as
percentage of capacity
HourOpt
Read operation
hours of unit
40009 Input
Register Integer
0-
infinity hrs
Read Displays cumulative
hours since startup
SmallHrs
Read minor
maintenance hours
remaining
40013 Input
Register Integer 0-6000 hrs
Read Displays hours until next
minor maintenance
LargeHrs
Read major
maintenance hours
remaining
40015 Input
Register Integer 0-6000 hrs
Read Displays hours until next
major maintenance
Status
Read humidification
status
40036 Input
Register Integer 0,1
-
Read 0 = Idle / Standby
1 = Active / Humidifying
Service
Read service
warning status
40037 Input
Register Integer 0,1
-
Read 0 = No Service Warning
1 = Service Required
Fault
Read fault status
40035 Input
Register Integer 0,1
-
Read 0 = No Fault
1 = Fault Detected
InputType
Read control signal
mode
40025 Input
Register Integer 0,1
-
Read
0 = Demand Signal
1 = RH Sensor Signal
("Transducer Control")
Connection
Read
communication
status
40015 Input
Register Integer 0,1
-
Read
0 = Communication Error
1 = Normal
Communications
Modbus Installation | 41