232SPS2-3903 Manual
Appendix A: Parallel Port Connections
A-1
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
APPENDIX A:
PARALLEL PORT CONNECTIONS
The parallel port connections for the parallel to serial and serial
to parallel mode are shown in Table A-1, and Table A-2,
respectively. The connections required are the same for both modes
of handshaking. The error lines on the parallel port are forced to the
"no error" states. If the printer is off-line, out of paper, etc., the
232SPS2 will force the busy line (Pin #11) on the parallel port high
(logic "1") when in parallel to serial mode. If a error occurs in serial
to parallel mode, the XOFF character will be sent or DTR will be
lowered depending on type of flow control used. (NU - Indicates a
signal is not used or is not “passed through”)
Table A-1
Parallel to Serial Mode
DB-25
Pin #
Signal Name
232SPS2
Direction
1 Strobe Input
2 Data
bit
#0
Input
3 Data
bit
#1
Input
4 Data
bit
#2
Input
5 Data
bit
#3
Input
6 Data
bit
#4
Input
7 Data
bit
#5
Input
8 Data
bit
#6
Input
9 Data
bit
#7
Input
10 Acknowledge
Output
11 Busy
Output
12 PE
"0"
Output
13 SLCT
“1”
Output
14 Auto
Feed
Input
(NU)
15 Error
"1"
Output
16 INIT
Input
(NU)
17
SLCT IN
Input (NU)
18-25 GND
232SPS2-3903 Manual
Appendix A: Parallel Port Connections
A-2
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Table A-2
Serial to Parallel Mode
DB-25
Pin #
Signal Name
232SPS2
Direction
1 Strobe Output
2 Data
bit
#0
Output
3 Data
bit
#1
Output
4 Data
bit
#2
Output
5 Data
bit
#3
Output
6 Data
bit
#4
Output
7 Data
bit
#5
Output
8 Data
bit
#6
Output
9 Data
bit
#7
Output
10 Acknowledge
Input
11 Busy
Input
12 PE
Input
(NU)
13 SLCT
Input
(NU)
14 Auto
Feed
“1”
Output
15 Error
Input
(NU)
16 INIT
“1”
Output
17
SLCT IN
“1” Output
18-25 GND
