Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 115
used, but internationally you may need to select the specific band to prevent frequency hopping
and/or roaming. Normally, when a modem is connected to the Xpert for the first time, it is
factory reset and programmed to work with pre-configured settings. The “Use Modem Setting”
may be used to bypass this initialization and use the settings that were pre-programmed in to
the modem. This allows many of the modem settings to be customized in the modem.
RelayUseDigIO
Power to Sutron’s GPRS modem is supplied and managed using PIN 9 of the RS232 port, but
when using other modems it may be desirable to control power a relay. When a connection is
made, DTR is always asserted to the device. For non-Sutron modems which can enter standby
mode when DTR is low this may be sufficient, but power to the device may be controlled by a
digital switch or relay controlled by a Digital I/O output port. When RelayUseDigIO is set to Yes,
the RelayModule and RelayChannel will determine which Digital I/O output turn on when the
modem should be on. The output is assumed to be open-collector, hence “on” means 0V is
output. If the output instead uses positive logic, RelayInvertOuput may be set to yes.
RelayModule
The DIO module the relay is connected to (typically 1).
RelayChannel
The DIO channel the relay is connected to.
RelayWarmup
A number of seconds to allow the GPRS modm to warm up after asserting power before trying
to establish a connection.
RelayInvertOutput
Inverts the sense of the DIO output. When set to “Yes” the DIO will output 5V when power to
the modem is required to be on.
Select Outputs
This menu shows a list of TxContent property values for all the outputs in the system. Pressing
SET/ENTER on one of the values will take you to the GPRS COMx menu for that particular
output, where you can change the value of TxContent, as well as view/change other properties
that affect GPRS transmissions.
Note: this is the same as the GPRS Settings accessed via Measurements/Mx/Ox/ GPRS Settings.
Changes can be made from either menu.
Select Outputs/TxContent
This property specifies what data to include in the transmission. See the following table for
possible values:
All the data logged for the output since
the last transmission will be
transmitted
Individual values logged for the output
since the last transmission will be
transmitted.
the time interval between readings
from the 8310 log
the time at which to begin extracting
data from the log in order to build a
message
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