Despatch Protocol 3 Modbus Communications - Manual (Page 40)

A DDRESS LIST Modbus Programming Manual
40 Version 2
Copyright © 2012 by Despatch Industries.
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Creating Or Editing A Profile Header at a specific location - Request (to instrument)
Field Name Data Comments
(Dec) (Hex)
Profile Starting Setpoint Low 01 01
Profile Recovery High Byte 00 00 0 = Control to off, 1 = Restart profile,
2 = Maintain last profile setpoint,
4 = Continue profile from where it was when
power failed
Profile Recovery Low Byte A/R A/R
Profile Recovery Time (Byte 4 - high)
Floating point number
Profile Recovery Time (Byte 3)
Profile Recovery Time (Byte 2)
Profile Recovery Time (Byte 1 - Low)
Profile Abort action High Byte 00 00 0 = Control to off
1 = Maintain last profile setpoint
Profile Abort Action Low Byte A/R A/R
Profile Cycles High Byte A/R A/R 1 to 9999 or 10,000 for “Infinite”
Profile Cycles Low Byte A/R A/R
CRC High Byte A/R A/R
CRC Low Byte A/R A/R
The instrument replies to this message with an Edit Response Message Section 2.9.5.9.
2.9.5.3. Creating a Segment (Command Code WS)
Creating new segments is only possible when a new profile is being created (see above for
instruction for creating a profile at the next available position, or at a position that you specify).
An error is returned if the correct sequence is not followed.
Creating Segments - 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
Write Start Address High 32 20
Write Start Address Low 06 06
Write Quantity Of Registers High 00 00
Write Quantity Of Registers Low 11 0B Create Segment (WS) = 11dec / 0x0Bhex
Byte Count 22 16 Create Segment (WS) = 22dec / 0x16hex
Command Code High Byte 87 57 Create Segment (WS) = 22355dec /
0x5753hex
Command Code Low Byte 83 53
Profile Number High Byte A/R A/R The profile number can be anything between
0 and 64
Profile Number Low Byte A/R A/R
Segment Type High Byte 00 00 0 = Ramp Time, 1 = Ramp Rate,
2 = Step, 3 = Dwell, 4 = Hold, 5 = Loop
6 = Join, 7 = End, 8 = Repeat sequence
then end
Segment Type Low Byte A/R A/R
Segment Info A (Byte 4 - High)
Floating point number
The meaning of the data contained in
Segment Info A depends on the type of
segment it relates to. See section 12.5.5.
Segment Info A (Byte 3)
Segment Info A (Byte 2)