B&B Electronics 3PCI2 - Manual (Page 57)

Documentation Number 3PCI2-0903 Manual Appendix A A –1
B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
Appendix A : Jumper/Mode Settings
Set JP1 and JP2 Jumpers to match your Operating Mode.
Port 1 (bottom connector)
Port 1
Jumpers
RS-232 RS-422
4-Wire
RS-485
4-Wire
RS-485
2-Wire
JP1 Top 232
(Right)
422/485
(left)
422/485
(left)
422/485
(left)
JP1 Middle -----
No effect
TX ENABLE
(right)
TX SD
(left)
TX SD
(left)
JP1 Bottom -----
No effect
RX ENABLE
(right)
RX ENABLE
(right)
RX SD
(left)
Table A.1 – Port 1 (nearest bus) Jumper/Mode
Port 2 (top connector)
Port 2
Jumpers
RS-232 RS-422
4-Wire
RS-485
4-Wire
RS-485
2-Wire
JP2 Top 232 422/485
(left)
422/485
(left)
422/485
(left)
JP2 Middle -----
No effect
TX ENABLE
(right)
TX SD
(left)
TX SD
(left)
JP2 Bottom -----
No effect
RX ENABLE
(right)
RX ENABLE
(right)
RX SD
(left)
Table A.2 – Port 2 (nearest card top) Jumper/Mode
The top jumper sets either 232 or 422/485 DB9 connections.
Only the Top JP1 or JP2 position affects RS-232 mode .
The middle jumper sets either 485 or 422 transmit enable.
The bottom jumper sets either 485 (half duplex) or receive enable.
Full duplex 4-wire modes must select RX ENABLE.