8.2 Auxiliary voltage
8 Connections
Technical description
186
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VM265.EN011
8.2.
Auxiliary voltage
The external auxiliary voltage U
aux
(standard 40…265 V ac/dc
or optional 18…36 Vdc) for the terminal is connected to the
terminals X3: 17-18.
NOTE! When optional 18…36 Vdc power module is used the polarity is as
follows:
X3:17 negative, X3:18 positive.
8.3.
Serial communication connectors
The pin assignments of communication connectors including
internal communication converters are presented in the
following figures and tables.
8.3.1.
Front panel connector
Figure 8.3.1-1 Pin numbering of the front panel D9S connector
Pin
RS232 signal
1
Not connected
2
Rx in
3
Tx out
4
DTR out (+8 V)
5
GND
6
DSR in (activates this port and disables the X4 RS232 port)
7
RTS in (Internally connected to pin 8)
8
CTS out (Internally connected to pin 7)
9
No connected
NOTE! DSR must be connected to DTR to activate the front panel connector and
disable the rear panel X4 RS232 port. (The other port in the same X4
connector will not be disabled.)
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