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Page 39 of 101
DWG ID: 181-0101-00A
Date: 2003-09-26
If CONMODE is set to TRANS, data will be transmitted when:
PACLEN is exceeded, or
PACTIME expires.
9.5.2.1.3
Suggested Settings
Usually, the CONMODE command is set to TRANS and the PACTIME command is set
to AFTER 1. The CONMODE TRANS command makes the modem data transparent to
the Remote device. The PACTIME AFTER 1 command allows the modem to transmit
the data received via the serial port with as little delay as possible. This speeds up the
response time of the system by reducing "dead-air" time.
It is also recommended to set the PACLEN command to zero. This allows the modem to
send a single packet of data to the radio of any size between 1 and the maximum of 256
characters. If the response data from the remote contains more characters than the
PACLEN command allows, the data will be transmitted in multiple packets with the
Remote POLLID automatically attached to the beginning of each data packet. In such a
case, it is the responsibility of the Control Application Program to reassemble the data.
CAUTION: Allowing the Control Site application to send more data than that permitted
by the PACLEN command is the most common cause of failure using the POLL mode.
BE ABSOLUTELY SURE THAT CONTROL SITE TRANSMISSIONS NEVER
EXCEED THE PACLEN LIMIT!
9.5.2.2
Entering POLL Mode
When you have entered the POLLID of the unit and made any desired changes from the
default settings in the parameters, use the INTFACE command to begin POLL operation.
Set the INTFACE command to POLL:
cmd:INTFACE POLL <cr>
and turn the unit off and then back on.
9.5.2.3
Exiting POLL Mode
If you want to exit POLL mode to "fine tune" parameter settings (or for any other
reasons), the command mode of the modem can be regained as follows:
If CONMODE = CONV
Enter: 0000QUIT<cr> (NOTE: MUST BE IN UPPER CASE)