User Manual

Table Of Contents

PM45 and PM45c Accessory User Guide 13

RS-422 Isolated, Full Duplex (reconfiguration required)

Note: The RS-422 circuit is available as a spare part.

Connector Configuration (RS-422 on “uart2”)

RS-422 Socket Pin of DB9 Signal Name Description

1 +5VDC External +5VDC max 600mA (automatic

switch off at overload, short-circuit protected)

provided strap is fitted on P3:2-3 which spoils

the galvanic isolation

2 +TXD +Transmit data

3 +RXD +Receive data

4 -

5 GNDE Ground

6 -

7 -RXD -Receive data

8 -TXD -Transmit data

9 -