DCP200 Profile Controller & Recorder -Product Manual
Page 126 Modbus Parameters 51-52-25-150, Issue 1 –April 2009
Segment Data

The Segment Data is included in the response to a Read Segment request. It is provided in

two parts (Segment Info A and B).

The meaning of the data contained in Segment Info A and B depends on the type of segment

it relates to. Null is shown for unused data, this can be any value.

Segment
Type
Segment Info
Description
A
B
Ramp Time Time Target setpoint Ramp to the target setpoint “B” in the time “A”
Ramp Rate Ramp rate Target setpoint Ramp to the target setpoint “B” at the ramp rate “A”
Step
Null
Target setpoint Step to a target setpoint “B”
Dwell Dwell time
Null
Stay at the current setpoint for a period of time “A”
Hold 0 = Operator
Null
Wait for the operator to release the hold
1 = Time of day Start Time Wait until time of the day “B” in seconds since
midnight. (recorder only).
2 = Aux A digital
input
Null
Wait for digital input A signal
3 = Aux B digital
input
Null
Wait for digital input B signal
Loop Number of times to
repeat 1 to 9999
Segment number Loop to the specified segment number “B” from this
point. Repeat this “A” times. Only segments below
the current segment can be entered. Two loops
must not cross each other.
Join
Null
Profile number On completion of this profile jump run profile “B”
End 0 = Control off
Null
Turn off all control outputs.
1 = Maintain profile
setpoint
Null
Stay at the final setpoint of the profile
2 = Use controller
setpoint
Null
Use the active controller setpoint.
Repeat
Sequence
Then End
0 = Outputs off Number of times to
repeat sequence
Repeat the profile sequence number “B” times,
then turn off the control outputs
1 = Maintain profile
setpoint
Repeat the profile sequence number “B” times,
then hold the last profile setpoint.
2 = Use controller
setpoint
Repeat the profile sequence number “B” times,
then use the active controller setpoint.
Read Profile Name

This command returns the name of the profile defined by the profile number requested.

Read Profile Name
-
Request (
to instrument
)
Field Name
Data
Comments
(Dec)
(Hex)
Unit Address
A/R
A/R
The ID address of the instrument
Function Code 23 17 Requires the multi read/write function
Read Start Address High Byte 32 20
Read Start Address Low Byte 06 06
Read Quantity Of Registers High Byte 00 00
Read Quantity Of Registers Low Byte 08 08
Write Start Address High Byte 32 20
Write Start Address Low Byte 06 06