
Universal PCI Board User’s Manual Hardware Installation
2-3
130 mm (5.12 in)
96.97 mm (3.82 in)
105 mm (4.13 in)
100.33 mm (3.95 in)
58 mm (2.28 in)
106.26 mm (4.18 in)
144.33 mm (5.68 in)
120.52 mm (4.74 in)
JP1
JP8
MU860
TX2
RX1 RX2
Tx3
Rx3
Tx4
Rx4
Tx5 Tx6
Rx5
Rx6
Tx7
Rx7
Tx8
Rx8
TX1
S1
RS-232
ON
RS-422
ON
OFF
ON
OFF
OFF OFF
OFF
OFF
4-Wire
RS-485
2-Wire
RS-485
S2
S3
CP-118U-I
DIP
12345678
ON
DIP
12345678
ON
DIP
12345678
ON
S1
S2
S3
Onboard termination resistors can be activated individually for each serial port using jumpers JP1
through JP8. JP1 corresponds to serial port 1. Short the jumper pins to activate the termination
resistor; leave the jumper pins open to bypass the termination resistor.
The onboard DIP switches, S1, S2, and S3, are used to select RS-232, RS-422, or RS-485 mode for
each serial port. There are 8 switches on each bank corresponding to the 8 serial ports. S3 selects
between RS-232 and RS-422/485, S2 selects between RS-422 and RS-485, and S1 selects between
2-wire and 4-wire RS-485, as follows:
Mode S1 S2 S3
RS-232 --- --- ON
RS-422 --- ON OFF
4-wire RS-485 ON OFF OFF
2-wire RS-485 OFF OFF OFF
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