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Protocol for tempering equipment
Byte 16:
Byte 17:
Byte 18-19:
Error messages
7.3
With parity or framing errors, or with undefined characters, no reply is provided.
If the checksum in the master telegram is faulty, or with an error in the message,
KS 50-1 TCont sends a NAK message.
Not Acknowledge message structure:
1
Address
Byte 1:
Byte 2-4:
Byte 5:
Byte 6-7:
g
The message is also sent, if an invalid value was sent, because e.g. set-point
changing via the interface is not possible during local mode.
Error messages
Status alarms 2
Bit 0:
pump defective:
Bit 1:
phase failure:
Bit 2:
system error
Bit 3, 4, 5, 6, 7: (fixed)
Status feedback
6Bh (k) switch-off: cooling down to return flow temperature
6Fh (o) during control operation: self-tuning busy
70h (p) switch-off: heating, cooling, pump switched off
72h (r ) control operation
73h (s)
switch-off: cooling down to return flow temperature
Checksum
2
3
4
Length
device address, e.g. 31h device no. 1
length (message is 7 bytes long: 30h, 30h, 37h)
identification: 7Fh "Not Acknowledge"
checksum
0; not supported
0; not supported
1: input STL has responded
(Stb) or instrument error (E. 1 , E. 2 )
0, 0, 0, 1, 0
5
6
Identification
check sum
18
Operating note KS 50-1 TCont
7
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