User Manual

Table Of Contents
12 PM45 and PM45c Accessory User Guide
RS-232 Socket Pin of DB9 Signal Name Description
1 +5VDC External +5VDC max 600mA (automatic
switch off at overload, short-circuit protected)
2 TXD Transmit data
3 RXD Receive data
4 DSR Data set ready
5 GND Ground
6 DTR Data terminal ready
7 CTS Clear to send
8 RTS Request to send
9 - -
1
2
3
6
4
5
7
8
9