4.7.5 Protocol of the interface
Note the following instructions:
n
The command from the computer must be made with a CR, CRLF, or
LFCR.
n
The response from the thermostatic circulator is always made with a
CRLF.
n
After each command sent to the thermostat, it is necessary to wait
for the reply before sending another command. This ensures that the
sequencing of inquiries and answers is clear.
CR = Carriage Return (Hex: 0D); LF = Line Feed (Hex: 0A)
Table 9: Example with set point transfer of 30.5 °C to the thermostatic
circulator
Computer
Temperature control device
"OUT_SP_00_30.5"CRLF
è
ç
"OK"CRLF
4.7.6 Read commands
The interface module recognizes the following read commands, which you
can use to retrieve operating data of the constant temperature equipment.
Table 10: Temperature
ID Function
Unit, resolu-
tion
Command
2 Temperature set point
[°C]
IN_SP_00
3 Outflow temperature
[°C], 0.01 °C
IN_PV_00
4 Outflow temperature
[°C], 0.001 °C IN_PV_10
5 Controlled temperature (internal / external Pt / external analog / external
serial)
[°C]
IN_PV_01
7 External temperature T
E
(Pt100)
[°C]
IN_PV_03
8 External temperature T
E
(analog input)
[°C]
IN_PV_04
14 External temperature T
E
(Pt100)
[°C], 0.001 °C IN_PV_13
25 Overtemperature turn off point T_Max
[°C]
IN_SP_03
27 Limitation of outflow temperature TiH (upper limit)
[°C]
IN_SP_04
29 Limitation of outflow temperature TiH (lower limit)
[°C]
IN_SP_05
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