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Protocol for hot-runner systems
8
Protocol for hot-runner systems
Selecting the hot-runner protocol is done via setting ProT = 2 .
With a hot-runner system, KS 50-1 TCont covers one channel.
Master telegram
8.1
The structure of the inquiry telegram is:
...4
5
...
Identification
Byte 5:
Byte 6-9:
Byte 10:
Byte 11-12:
g
Special case: first message after control system start-up: system can read up to 25
channels per device address. Therefore, the message contains up to 25 times the
set-point or output value, and the control command.
However, a KS 50-1 TCont only uses the values for channel 1 from the message,
and indicates in the reply that only one channel is provided.
Master telegram
6
Identification: 41h (‚A') is supported.
• Set-point with command for closed-loop control: (= SP) in 0,1 °C
(3 digits before, 1 digit behind the decimal point);
Negative temperatures up to –99 °C are possible (1
• Output value with command for positioning: in % (= Yman)
(3 digits before, 1 digit behind the decimal point)
Control commands
72h (r): closed-loop control (normal operation),
in °C; instrument in automatic mode;
after control function switch-off, self-tuning is done,
if permitted
73h (s): positioning,
in %; instrument in manual mode
61h (a): switch off channel
control function switched off
Checksum
...
10
Message
20
Operating note KS 50-1 TCont
11+12
Checksum
st
byte = 2dh)
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