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DCP200 Profile Controller & Recorder - Product Manual
51-52-25-150, Issue 1 – April 2009 Modbus Parameters Page 125
Read A Segment
-
Response (
from instrument
)
Field Name
Data
Comments
(Dec)
(Hex)
Unit Address
A/R
A/R
The ID address of the instrument
Function Code 23 17 The multi read/write function
Byte Count 02 18
Command Response High Byte 82 52
Command Response Low Byte 83 53
Profile Number High Byte
A/R
A/R
Profile Number Low Byte
A/R
A/R
Segment Number High Byte
A/R
A/R
Segment 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 below.
Segment Info A (Byte 3)
Segment Info A (Byte 2)
Segment Info A (Byte 1 - Low)
Segment Info B (Byte 4 - High)
Floating point number
The meaning of the data contained in
Segment Info B depends on the type of
segment it relates to. See below.
Segment Info B (Byte 3)
Segment Info B (Byte 2)
Segment Info B (Byte 1 - Low)
Auto Hold Type High Byte
A/R
A/R
0 = Auto-Hold Off, 1 = Hold above SP,
2 = Hold below SP,3 - Hold above and
below SP
Auto Hold Type Low Byte
A/R
A/R
Auto Hold Value (Byte 4 - High)
Floating point number
Auto Hold Value (Byte 3)
Auto Hold Value (Byte 2)
Auto Hold Value (Byte 1 - Low)
Events High Byte 00 00 The status of the five events are defined by
the lowest 5 bits of the low byte. A bit value
of 1 signifies the event is on.
Bit 0 = event 1, bit 1 = event 2, bit 3 =
event 4 and bit 5 = event 4.
Events Low Byte
A/R
A/R
CRC High Byte
A/R
A/
R
CRC Low Byte
A/R
A/R