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Chapter 3 Lookout Runtime Menu Commands
© National Instruments Corporation 3-11 Lookout Operator’s Manual
The Hayes Corporation standard command for configuring the modem to
hang up and enter command mode upon loss of DTR is
&D2. You can use
a terminal program to make this setting permanent on most modems by
entering the modem command
AT&D2&W to store the setting permanently
in nonvolatile modem memory. Or you can just add
&D2 into the Dialing
prefix. The default Dialing prefix is
ATX4MVEDT, so you might change it
to
AT&D2X4MVEDT.
Retries specifies the number of times Lookout dials the specified phone
number and attempts to connect to the modem at the other end of the line.
If Lookout fails to connect after the specified Retries, it generates an alarm
and moves on to the next phone number in the polling queue (if a queue
has formed).
Wait for connection specifies the length of time Lookout waits to receive
a connect signal back from the modem it is calling. The time period begins
when Lookout first sends the local modem the dialing prefix command. The
time should be long enough for the local modem to receive a dial tone, dial
the phone number, allow the remote modem to pick up the line, and send
back a connect message. If the specified time is too short, your system
could be operating correctly but never make a connection.
Pause between calls is the length of time Lookout waits after hanging
up before it sends the local modem the next dialing prefix signal. If the
specified time is too brief, your system may not hang up the existing call
but instead attempt to call the next number.
Note Your specific modems, radios, and local phone lines may operate faster or slower
than the default settings. You may need to use a trial-and-error approach to find the best
settings for your system.
Options»Import APT Database
The Options»Import APT Database command only appears if a Tiway
object exists in the currently executing process file. Choose this command
to import an APT tag file and create new database members for the selected
Tiway object.
Options»Modbus
When you create a Modbus object, Lookout adds the Options»Modbus
item. Selecting this item displays Modbus statistics.