Saia-Burgess
Controls Ltd.
Manual Modem PCDxx7 Serie│Doc. 26/793; Ed. E2│30.04.2005
Modem parameters and Main Driver functions
2
2-6
Main Driver function
2.2.2 Function
Starting
At the Power on, the modem is not ready to
handle calls. The FB70 has to run with the
input “START_Flag” =0. This will start the
initialization procedure of the modem. Con-
cretely the initialization is :
•
Configure the serial COM port 1
•
Reset the Modem
•
Init with the INIT_COMMAND_1
•
Init with the INIT_COMMAND_2
If all the init step have been completed with-
out error the Driver is going in a WAITING
status.
Otherwise if an error appended, the Driver
will not be ready and an error code will be
issued.
On this status the Driver is waiting for an
incoming call or the command to start an
outgoing call.
Power ON
FB70 is not yet executed
Modem can't be operated, no
outgoing or incoming call
FB70 is call with
the START_Flag in
low level
The DRIVER
1) The serial COMport 1 is configured
2) RESET the modem with COMMAND_RES.
3) Init the modem with INIT_COMMAND_1
4) Init the modem with INIT_COMMAND_2
All command are
executed without
ERROR
The DRIVER is READY and WAITING
1) START_Flag and DRIVER_READY are set to 0
2) Waiting for incoming call
3) Waiting for command: start outgoing call
