ProVU4 Controller, Profiler & Recorder/Controller - Product Manual
Page 126
Modbus Parameters
59407, Issue 3 – May 2011
Read A Segment - Request (
to instrument
)
Field Name
Data
Comments
(Dec)
(Hex)
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
CRC High Byte
A/R
A/R
CRC Low Byte
A/R
A/R
The instrument replies to the Read A Segment request as follows:
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