saia-burgess PCD 7 Series, Руководство пользователя

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Saia-Burgess Controls Ltd.
Manual Modem PCDxx7 Serie│Doc. 26/793; Ed. E2│30.04.2005
Modem parameters and Main Driver functions
2
2-2
Confi guration of the modem parameters
Description of parameters and their possible values (In Bold , default values):
Parameter Possible value Description
BAUD_RATE 300, 600, 1200,
2400, 4800, 9600 ,
19200, 38400
Frequency of the communication between the
PCD and the Modem. (In front and behind the
connection between the modems).
DATA_BIT 7 or 8 Number of bit per character.
STOP_BIT 1 or 2 Number of stop bit at the character end.
PARITY_MODE 0 none
1 Even
2 Odd
3 Force Low
4 force High
Parity off the character
INTERFACE_TYPE 0 (RS232) Only RS232 is possible
ZVZ 1..2000, 20 Time out in ms.
Maximum time between character
IN_BUFFER_SIZE 1..4000, 500 Size in byte of the receiving buffer. The input
buffer is use by the modem DRIVER but also by
the other function which will access to the serial
port, like the protocol functions. Make sure it’s
large enough for the amount of data you will
need to exchange. This size can be set only
here.
OUT_BUFFER_SIZE 1..4000, 500 Size in byte of the send buffer. The output buffer
is use by the modem DRIVER but also by the
other function which will access to the serial port,
like the protocol functions. Make sure it’s large
enough for the amount of data you will need to
exchange. This size can be set only here.
2.1.2 Structure field “AT_COMMAND”
The structure “AT_COMMAND”, contains all the command sent to the modem. Like
the DIAL command or the initialization of the modem.
Those command are different from one modem to an other one. So they are specific
to the modem you are using. Refer to the operating manual of the modem to find the
right configuration. A list of modem and their command already tested on the SAIA
PCD xx7 is annexed (Annex 1).