Campbell COM220 Manuel d'instructions télécharger pdf (Page 29)

Appendix A. Changing COM220 Settings

The COM220 can return several possible responses once

connected (each terminating in a carriage return):

“1” CONNECT

“5” CONNECT1200

“10” CONNECT2400

“13” CONNECT9600

“18” CONNECT4800

“20” CONNECT7200

“21” CONNECT12000

“25” CONNECT14400

Hence, to work with the COM220, the user must put in a

NULL string, or else the DialModem will fail unless, by

chance, it returns the specific string the user entered.

Therefore, it is highly recommended to use the “” string for

the connect string, unless the user is using some other

modem that he knows has a different response string than

those listed above.

A.4.3 P97 Instruction (for CR10X)

Instruction 97 is a Program Control instruction that makes the following types

of calls:

• Datalogger calls a computer to send data.

• Datalogger calls a voice phone using our voice-synthesized modem.

• Datalogger calls a remote datalogger to retrieve its input locations.

Instruction 97 has the following parameters:

• Parameter 1 — Modem/Baud Rate Codes

• Parameter 2 — Flag No. to Disable P97

• Parameter 3 — Call Time Limit (seconds)

• Parameter 4 — Seconds Before Fast Attempts

• Parameter 5 — Fast Attempts

• Parameter 6 — Minutes Before Slow Attempts

• Parameter 7 — Failure Location

• Parameter 8 — Callback ID

CAUTION

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Campbell COM220 Manuel d'instructions Page 29