DCP200 Profile Controller & Recorder -Product Manual
51-52-25-150, Issue 1 –April 2009 Modbus Parameters Page 119
Segment Data

The Segment Data is included in the command message when creating, editing or inserting

segments (see above). 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, these data values should be set to zero when

writing the segment data.

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.
The instrument replies to this message with an Edit Response Message.
Deleting Profiles

An individual profile can be deleted, or all profiles can be cleared with a single message.

Deleting a profile removes the header of the specified profile and any segments associated

with it. Delete all profiles wipes all profiles and segments from the instrument.

Delete Profiles
-
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 00 00
Read Quantity Of Registers Low 01 01