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JP1 - USB type B Connector.
JP7 - RS485 Connector.
P1 - RS232 Connector (DB9 Male).
JP6 - RS485 load resister jumper (120 Ohm).
Configuration Settings
RXD RS232 RS485 A(+) B(-)
JP8 2-3 1-2
RS232 Configuration
Jumper Setting (2-3) (1-2)
RXD (JP3) PIN 2 PIN 3
TXD (JP2) PIN 2 PIN 3
CTS (JP5) PIN 7 PIN 8
RTS (JP4) PIN 7 PIN 8
Jumper Default Setting
JP8 1-2 Select RS485
RXD (JP3) 2-3 Connect to DB9 PIN 2
TXD (JP2) 1-2 Connect to DB9 PIN 3
CTS (JP5) None Not connected
RTS (JP4) 1-2 Connect to DB9 PIN 7
Baud Rate
This device can scan terminal baudrate and set device Baud rate as same as terminal.
Compatible Baud rate (Bit per second)
300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Power
This device can use power from USB bus or power from DC adaptor 9-12 VDC
See users guide for Software Installation and compatibility
JP6 JP8
DC Jack
9-12 VDC
USB
JP1
JP3
JP2
JP5
JP4
P1
RS485
A
B
JP7
USB to RS-232 Converter APPENDIX F
VSI-Pro Max POS / Cash Register Interface
Figure 115: USB to RS-232 Converter PCB Figure 116: USB232