47
COM6 uses the RJ-45 connector to accept the VFD customer display. If the customer display is not required,
this port may function as an RS-232C port. An adapter cable to convert RJ-45 to DB-9 is included in the
POS-420 Expander plus's package contents. Jumpers on the circuit board must also be reconfigured as
shown in the table.
RJ-45 Pin Definitions
PIN No.
Description
PIN No.
Description
1 +5V 2 CTSF
3 GND 4 RTSF
5 DTRF 6 DSRF
7 TXF 8 RXF
RJ-45 Pin Definitions
PIN No.
Description
PIN No.
Description
1 +12V 2 +12V
3 GND 4 GND
5 DTRF 6 DSRF
7 TXF 8 RXF
DC Power Jack Connector
PIN No.
Description
1 GND
2 DC_IN
3 GND
4 DC_IN
J3 (IOTR Board)
7-8 Short
(+5V)
J1 (Bottom I/O Board)
1-3 Short
2-4 Short
J1 (Bottom I/O Board)
3-5 Short
4-6 Short
J3 (IOTR Board)
11-12 Short
(+12V)
COM6
DC_IN1
Mode1: RJ-45 connector used for RS232 device (Default)
Mode2: RJ-45 connector used for VFD device