B&B Electronics 232SPS2 manual Appendix a Parallel Port Connections, Direction

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	Signal Name	232SPS2
Pin #		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

Table A-2

Serial to Parallel Mode

DB-25	Signal Name	232SPS2
Pin #		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

232SPS2-3903 Manual	Appendix A: Parallel Port Connections	A-1	232SPS2-3903 Manual	Appendix A: Parallel Port Connections	A-2
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