Honeywell UDC2800 - Example for Determining a Segment Register

426
Parameter Name
Register
Offset within
Segment
Access Description
register is not
permissible in the
run mode.
Ramp or Soak value 4
R/W Floating Point
Writing to this
register is not
permissible in the
run mode.
ONLY for Soak
Segment
Example for Determining a Segment Register
To change the ramp value in segment #8 of setpoint programmer #2,
the register address is determined as follows.
1. Use Table Set Point Program Segment Map to determine the start
address for setpoint program #2 profile. The value is 2A00 Hex.
2. Calculate the offset address for segment 8 in a profile. This is
calculated as:
Segment #8 offset address:
= (segment number -1) * 8
= (8-1) * 8
= 56 or 38 Hex
3. Use Table Segment Register Map to determine the register offset
for the ramp value. The value is 4.
4. Calculate the address by adding the results of steps 1, 2, and 3 to
determine the register address.
Register address:
= Setpoint program #2 profile base address +
Segment 8 offset address + Ramp value register
offset
= 2A00 + 38 + 4
= 2A3C
Chapter 12 - Standard Modbus Read, Write and Override Parameters