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Description
Type
Source
Header
Data Block
STATUS REQUEST
Command
master
129
No
This packet instructs the Controller to reply with information as to the status of the
Controller
Description
Type
Source
Header
Data Block
STATUS REQUEST
Reply
Controller
129
123 bytes
The data bytes of the Status Request Reply are as follows (in
pear in the data blocks).
1 byte: Running status:
0 = idle
1 = running steady
2 = N/A
state
3 = running a program
4 = counting down to program start
the order in which they ap-
starts byte No 001
ends byte No 001
1 byte: Controller Data Entry Activity. Value when the Controller is displaying any of
the following data entry screens:
Steady State
" 1", 2 SP (Format 500 only)
"2",
Program Run (Format 550 only)
"3",
Countdown to Program Start (Format 550 only)
"4",
Program Edit (Format 550 only)
"5",
Engineering (Format 550 only)
"6".
Byte set to "0" for all other screens. When this byte is not set to "0", the
Sel/Change Steady State Condition Command Packet (see below) is not operational
(Controller has priority over master).
starts byte No 002
ends byte No 002
1 byte: Logging Status
0 = inactive
1 = active starts byte No 003
ends byte No 003
1 byte: Temperature Alarm Status
0 = in limit
1 = in alarm starts byte No 004
ends byte No 004
1 byte: Humidity Alarm Status
0 = in limit
1 = in alarm starts byte No 005
ends byte No 005
6 bytes: Temperature in degC, eg "-150.0" starts byte No 006
ends byte No 011
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