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The two pri mary se rial ports, COM1 and COM2 are con fig ur able for RS- 422, RS- 485 or J1708,
with the ad di tion of op tional driver ICs. The con figu ra tion op tions for each of the sup ported modes are
shown on the fol low ing pages. Connection to COM1 and COM2 is made through the Multi-I/O
connector at J27. An adapter cable (P/N CBL-247-1) is available from WinSystems' to adapt to
standard DB9 connectors.
COM1 - RS- 232
J11
3 2 1
o o o
COM2 - RS- 232
J13
3 2 1
o o o
COM3/COM4 - RS- 232
COM3 and COM4 are RS- 232 only and are ter mi nated at J25. An adapter ca ble is avail able from
WinSystems (P/N CBL-173-1), which adapts J25 to two stan dard DB9M con nec tors. The pin
defi ni tions for J25 are shown here :
030530
WinSystems - "The Embedded Authority"
J12
U24 - In stalled
U25 - Not In stalled
1 2 3
U26 - Not In stalled
o o o
J14
U28 - In stalled
U29 - Not In stalled
1 2 3
U30 - Not In stalled
o o o
1 o o 2
COM3 DCD
3 o o 4
COM3 RX
5 o o 6
COM3 TX
7 o o 8
COM3 DTR
9 o o 10
GND
11 o o 12
COM4 DCD
13 o o 14
COM4 RX
15 o o 16
COM4 TX
17 o o 18
COM4 DTR
19 o o 20
GND
EBC-LP OPERATIONS MANUAL
RX Data
TX Data
RX Data
TX Data
GND
J25
COM3 DSR
COM3 RTS
COM3 CTR
COM3 RI
N/C
COM4 DSR
COM4 RTS
COM4 CTS
COM4 RI
N/C
COM1 DB9
1 o o 6
CD
DSR
2 o o 7
RTS
3 o o 8
CTS
4 o o 9
DTR
RI
5 o
GND
COM2 DB9
1 o o 6
CD
DSR
2 o o 7
RTS
3 o o 8
CTS
4 o o 9
DTR
RI
5 o
Page 2-7
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