Appendix a: parallel port connections - pg a-1 – B&B Electronics 232SPS2 User Manual

Page 8

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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

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