Despatch P1400+ Temperature Controller User Manual
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Parameter
Modbus
Parameter No.
ASCII Ident &
Message Types
Notes
Bit
Meaning
0
Alarm 1 status.
0 = activated, 1 = safe
1
Alarm 2 status.
0 = activated, 1 = safe
2
Self-Tune status.
0 = disabled
1 = activated
3
Change Indicator. 1 =
A parameter other than
controller status, PV or
Output power has been
changed since the last
time the status word
was read.
4
Comms write status:
0 = disabled
1 = enabled.
5
A/M control.
0 = disabled
1 = enabled
7
Pre-tune status.
0 = disabled
1 = enabled.
Controller Status
L
Type 2
RO
8
Loop alarm status.
0 = activated, 1 = safe.
Scan Table
]
Type 2
RO
Reads back main process values.
Response is: L{N}25aaaaabbbbb
cccccdddddeeeeeA* where:
aaaaa = Actual Setpoint value
bbbbb = Process Variable value
ccccc = Primary PID Power value
ddddd = Secondary PID Power value
eeeee = Controller Status (see above)
Equipment ID
122
RO
The four digit model number 6100
Serial Number Low
123
RO
Digits aaaa
Serial Number Mid
124
RO
Digits bbbb
Serial Number High
125
RO
Digits cccc
Unit serial number.
Format aaaa bbbb
cccc, (12 BCD digits).
Date of
manufacture
126
RO
Manufacturing date code as an
encoded binary number. (e.g. 0403 for
April 2003 is returned as 193hex)