9.3
Description of the communication parameters to be set
Station number
The stations number is the controller’s address. It can only be allocated once in a system (net-
work).
Baud rate (
BAUD)
Transmission rate.
Within a bus system, the transmission rate is the same as the transfer rate between the con-
trol station and the controller. The baud rate within the system must always be the same.
Pulse or multifrequency dialing PULS/ton (Fb44)
Determines the dialing procedure: Pulse dialing (Puls) or multifrequency dialing (ton).
Telephone number of the control station
The telephone number may have 23 characters at the maximum. “-” indicates the end of the
string. Enter short pauses (e.g. between dialing code and the telephone number) using “P”.
Example: Telephone number 069-654321 --> Enter 0 6 9 P 6 5 4 3 2 1 -
Telephone number of the alternative recipient (
NR ALT)
Enter the number in the same manner as the control station number.
Modem dialing interval (
PA)
The time interval that must be kept between two calls.
Number of dialing attempts (
An)
The number of attempts to dial the control station when the control station line is busy without
resetting the function to trigger a call by the control system. After the specified number of
redialing attempts have failed, the controller uses the alternative phone number. The function
to trigger a call is reset by the control system by retrieving the status register (FSR).
Cyclic initialization (
In)
This parameter defines the period of time for a cyclical issue of the initialization command
"ATZ". The command is not issued during dial-up or when connected. The ATZ initialization
causes the profile 0 to be copied to the active profile in the modem provided the modem pa-
rameters have been set and saved in profile 0 using a terminal program that came with the
modem.
Note!
When using a dial-up modem, no data can be written to the controller at first after the con-
nection has been established! To unlock, the key number needs to be sent to holding register
158.
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EB 5477 EN
Communication