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INSTALLATIONS
IB940 User’s Manual
19
J3: Parallel Port Connector
The following table describes the pin out assignments of this connector.
Signal Name
Pin #
Pin #
Signal Name
Line printer strobe
1
14
AutoFeed
PD0, parallel data 0
2
15
Error
PD1, parallel data 1
3
16
Initialize
PD2, parallel data 2
4
17
Select
PD3, parallel data 3
5
18
Ground
PD4, parallel data 4
6
19
Ground
PD5, parallel data 5
7
20
Ground
PD6, parallel data 6
8
21
Ground
PD7, parallel data 7
9
22
Ground
ACK, acknowledge
10
23
Ground
Busy 11
24
Ground
Paper empty
12
25
Ground
J3
Select 13
N/A
N/A
J4, J5: COM1 and COM2 Serial Ports Connector
J4 and J5 both 10-pin headers, are the onboard serial port connectors.
Pin #
Signal Name
RS-232 RS-422 RS-485
1 DCD
TX- DATA-
2 RX TX+ DATA+
3 TX RX+ NC
4 DTR
RX-
NC
5
GND GND GND
6 DSR
NC
NC
7 RTS
NC
NC
8 CTS
NC
NC
9 RI
NC
NC
J4
Fixed as
RS-232
J5
Configurable
as RS-232/
RS-422/485
with jumpers
JP1/JP2/JP3
10
NC NC NC