Setpoints; Using A Computer Setpoint (Overriding Controller Setpoint) - Honeywell UDC2800 Product Manual

Chapter 11 - Modbus RTU Function Codes
Table 11-9: Setpoint Associated Parameters
Parameter
Setpoint Limits
Computer Setpoint
Table 11-10: Computer Setpoint Selection
Parameter
Description
Computer
Setpoint
194

Setpoints

You can use two separate local setpoints in the controller. The
identifying register addresses listed in the following table allow you
to select which setpoint you want to use and to enter a value in
Engineering Units (whichever is selected at register address 8D7
(Hex)) for that setpoint via communications.
Associated Parameters
Refer to table below to display or change any of the parameters
associated with the setpoint.
Using a Computer Setpoint (Overriding Controller
Setpoint)
You can use a setpoint generated from the computer to override the
setpoint being used by the controller. The value generated by the
computer will have ratio and bias applied by the controller.
Register Address
Use the identifying code in table below to enter the computer
setpoint.
Register
Data
Address
Type
Hex Decimal
107 263 FP
Register Address
Hex
E5, E6
107
Data Range or Enumerated
Access
Selection
R/W Value from computer with Ratio
and Bias applied by the controller.
Within the Setpoint Range Limits
Decimal
229, 230
263