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Rs-232 communications, Modems and cables, Hayes relevant commands – Gasboy CFN Series CFN II Quick Reference User Manual

Page 53: Rs-232 straight cable

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CFN II Quick Reference

C09159 Rev. 2238

49

3. Start counting turns.

4. Continue turning R1 clockwise until the data

starts to scramble again.

5. Turn R1 counterclockwise half the number of

turns you counted in order to position it in the
middle of the acceptable range.

RS-232

Communications

Modems and Cables

Network Compatible Modem - C05899

Configured Modem - C01533

Answer only modem setup:

DTR signal recognized
Result codes not sent
Commands are not echoed
Auto Answer enabled

CD present when connection complete
Set for single line
DTR hangs up modem

Dial out modem setup:

DTR signal recognized
Result codes are digits
Result codes are sent
Characters are not echoed

Auto answer enabled
CD present when connection complete
Set for single line
AT command set enabled
DTR hangs up modem

Hayes Relevant Commands

1200 Setup

The following string is sent automatically by the Site
Controller to initialize the 1200 modem in smart
mode:

ATZ

ATX0V0Q0E0F1M1S0=2S7=200

2400, 9600, and 14.4 Setup

The following string is sent automatically by the Site
Controller to initialize 2400, 9600, and 14.4 modems
in smart mode:

AT&F

ATX4VQEM1S0=1S7=200

AT&D2&C1&S

Hayes Optima Modems

AT&Q0&W

RS-232 Straight Cable

A straight cable with male DB-25 to male DB-25 is
part number C04549. A straight cable with male DB-
25 to female DB-9 is part number C04654.

These cables are used for Hayes modems and
systems with a local terminal and/or printer.

Null Modem Cross Cable

A null modem cross cable with male DB-25 to male
DB-25 is part number C05039. A null modem cross
cable with male to female is part number C05928.

2

3

4

5

6

7

8

20

2

3

4

5

6

7

8

20

1

13

14

25

Male Connector

(wire end view)

Male Connector

Male Connector

2

3

4

5

6

7

8

20

2

3

4

5

6

7

8

20

1

13

14

25

Male Connector

(wire end view)

14

25

1

13

Female Connector

(wire end view)

Male or Female

Connector

Male Connector