Modem Programming
Modem specific management parameters
Introduction A detailed description of these parameters is available in the common section. See
(PL7 Micro/Junior/Pro ; Communication applications ; Volume 1).
This document only describes parameters specific to communication via a modem.
z z
These parameters are:
Timeout, operation report.
CALL_MODEM function timeout
Timeout of the function is a time used to check for the absence of response to the
CALL_MODEM function.
This time, (increment of a 100 ms time base), is a combination of different parameters configured via the Modem Configuration screen.
It is advisable to allocate the following minimum value to this parameter:
Minimum timeout = the number of redial attempts * dialing time + (number of redial attempts - 1) * delay between redial attempts
Operation report Operation reports are specific to the modem and only significant if the z z communication report has the following values:
16#00,
16#FF.
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Communication report = 16#00
In this case, the exchange is correct.
In this case, the operation report (most significant byte) is:
Value
16#00
16#01
16#02
16#03
16#04
16#05
16#06
16#07
16#09
16#0A
16#0B
16#0C
Meaning
Command executed
Non processed request
Incorrect response
Connection in progress by a remote modem
Connection in progress by a local CALL_MODEM function
Connection in progress by an external CALL_MODEM function
Connection request by a local CALL_MODEM function
Connection request by an external CALL_MODEM function
Remote station busy
Disconnection by a remote modem
Disconnection due to protocol error
Disconnection by timeout
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Communication report = 16#FF
In this case, the message is refused.
In this case, the operation report (most significant byte) is:
16#08
16#0B
16#0C
16#0D
16#0F
16#11
16#12
16#14
Value
16#01
16#02
16#03
16#04
16#05
16#06
16#07
16#15
16#16
16#17
Meaning
Lack of resources on connection to processor
Lack of line resources
Device missing on line
Line error
Length error
Communication channel faulty
Addressing error
Application fault
No system resources
Inactive communication function
Destination missing
Intra-station routing problem or non configured channel
Address format not handled
Lack of destination resource
Non operational connection
Absence of resource on the local channel
Non-authorized access
Incompatible network configuration
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