This line is connected to TP1.2. If a jumper is
connected between TP1.2 and TP1.3, these lines
can be used for “board connected” -detection.
LOCAL CONTROL X6 (D-SUB 9 Pole):
Local, RS422, RS485 DB9 serial line Interface
Pin no: Name I/O Description & Specification
2 Tx Low O RS422/485 Transmitter negative line
3 Tx High O RS422/485 Transmitter positive line
4 Rx Low I RS422/485 Receiver negative line
5 Rx High I RS422/485 Receiver positive line
6-7 +15V O +15VDC
8-9 -15V O -15VDC