Optional Serial Output; Com5 Serial Connection - ob DD2050 Use And Maintenance Manual

3.9 OPTIONAL SERIAL OUTPUT

In case of an additional serial board is installed in the indicator the
connections are according the following drawings

COM5 serial connection

DSUB9 9-pin female connector.
PIN
1
2
3
4
5
6
7
8
9
NC = do not connect
ATTENTION
Max. conditions of usage under RS232 standard:
Max. transmission distance: 15 m
Maximum voltage at ends: ± 12 VDC
For connection to external devices, it is recommended to use a shielded cable, making sure to
connect the shield to the metal part of the 9-pin connector's casing.
•
If the COM5 serial port is configured in compliance with the RS422 standard, proceed as follows:
provide a jumper between pin 6 and pin 8 to connect the termination resistor.
ATTENTION
Max. conditions of usage under RS422 standard:
Max. transmission distance: 1200 m
Maximum voltage at ends: +/- 7V
For connection to external devices, it is recommended to use a twisted pair, making sure to
connect the shield to the metal part of the 9-pin connector's casing.
1-32
DESCRIPTION
RX422 -
RX232
TX232
NC
GND
RX422 +
TX422 -
TERMINATOR
TX422 +
DD2050