Rs-232 communications, Modems and cables, Hayes relevant commands – Gasboy CFN Series CFN II Quick Reference User Manual
Page 53: Rs-232 straight cable

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