Technical Information
How to Connect the Open-Collector Inputs of the Controller
17
P2 – Serial
Figure 14 9 pin connector
This is a 9 pin D-type serial input/output connector to control via an
RS 232 or RS 485 connection the TwisTorr Medium-TMP
onboard
Controller.
Signal characteristics and use
Pin N.
Signal name
1
RESERVED
2
TX (RS232)
3
RX (RS232)
4
SPARE
5
GND
6
A + (RS485)
7
SPARE
8
B – (RS485)
9
RESERVED
NOTE
Note that the vent valve can also be controlled by means of the serial
connection
A serial communication kit with a serial cable and the serial
communication software is available (optional).
TwisTorr Medium-TMP
onboard
Controller User Manual /
87-901-050-01 (B)
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