Section 4. Setting up Datalogger Networks
If the answering phone is a voice modem, a code must be entered
at the end of the dial string to put the modem into data mode.
Use *9 for a VS1 or 9 for a COM300/310/320. The code should
be sent after the modem has answered and the communication
link has been negotiated. Use the Delay field or insert one or
more commas (resulting in a 2 second delay for each comma) to
pause before sending the code. A typical dial string in this
instance might be 1-435-555-1212,,,,,9. The COM320 may
require an additional 9 to ensure that the 9 is received, e.g., 1-
435-555-1212,,,,,,9,9.
NOTES
Precede the phone number with a P to change from Tone to Pulse
dialing.
4.2.4.7 RFBase
The RF base modem acts as a gateway device that provides RF communication
with the remote RF modems connected to dataloggers at the field site.
Standard
Communications Enabled – Before communications can take place, all
devices in the chain must have the Communications Enabled box checked.
When this box is selected, communication to the RF base is enabled.
Maximum Time On-Line – This field is used to define a time limit for
maintaining a connection to the device. (This may be useful in avoiding costly
communication costs, in the event that a connection to a station is inadvertently
maintained for a long period of time.) Maximum Time On-Line applies to both
scheduled connections and manual connections. However, for manual
connections from the Connect Screen, it is always best to manually disconnect
rather than relying on LoggerNet to disconnect for you.
When the device is contacted on a schedule, communication with the device
will be terminated once this time limit is exceeded. A value of 0 in this field
indicates that there is no time limit on maintaining a connection to the device.
When the device is connected in the Connect Screen and the time limit
approaches, a dialog box is displayed warning the user that Max Time On-Line
is about to be exceeded. The dialog box has Reset Max Time and Don’t Reset
buttons. If the Reset Max Time button is pressed, the Max Time On-Line
counter will be reset. If the Don’t Reset button is pressed or if no button is
pressed, the connection will be terminated when Max Time On-Line is
reached.
The format for this field is 00 h(ours) 00 m(inutes) 00 s(econds).
4-25
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General