User's Manual

WESROC
®
RMS Cellular Tank Monitor - Operation Manual - Independent Technologies, Inc.
72-70-164, Rev. P4 Page 10 06/16/2011
changed since the last measurement. Actions may include starting or ending the
qualification of a tank level event, reporting a tank level event to the Host, or reporting to
the Host at a scheduled report time. While in Normal mode, the CTM is also constantly
monitoring itself for any conditions that may require reporting to the Host. The CTM will
also simulate a WESROC
®
RMS Tank Transmitter and will send data packets to a Base
Unit while in this mode if the Local Display configuration parameter has been enabled.
INITIALIZATION Mode: (One programming magnet in INIT position.)
Initialization mode is used for initializing the CTM to a WESROC
®
RMS Base Unit (Base
Unit) before using the Base Unit as a local tank level display device. Once the CTM has
been put into Initialization mode, it will simulate a WESROC
®
RMS Tank Transmitter
and will send an initialization data packet to the Base Unit once every 15 seconds (or
sooner if the tank level changes.) The CTM will time out of Initialization mode and will
revert to the Normal operating mode after 60 minutes. This is done to conserve battery
life and to ensure that the CTM continues reporting to the Host once the installer has left
the site. See the operating manual for the type of Base Unit that you are using for
instructions on putting the Base Unit into Initialization mode.
CONFIGURATION Mode: (One programming magnet in both OFF and INIT positions.)
Configuration mode is used to change one or more of the internal CTM configuration
parameters. When in this mode, system (CTM) or application (tank level) operating
characteristics can be changed using a PDU.
Changes made with a PDU are reported to the Host once the CTM is returned to
Normal mode. If field configuration is enabled in the Host, the Host will store the
changes to its configuration database, and will send the changes back to the CTM to
confirm acceptance of the changes. If field configuration is not enabled in the Host, the
Host will overrule the CTM and will send the previous configuration back to the CTM.
The CTM will time out of Configuration mode and return to Normal mode if it has not
received a configuration command from the PDU for 10 minutes. This is done to
conserve battery life and to ensure that the CTM continues reporting to the Host once
the installer has left the site.
Reporting To Host
The CTM reports to the Host on a schedule determined by the Host configuration. The
reporting schedule can range from once per hour to once per month. The report interval
will directly affect battery life as the cellular sub-system is the major consumer of power
in the CTM. It is not recommended to leave the CTM configured with an hourly reporting
schedule for more than 24 hours as it will shorten battery life and will lead to excessive
cellular data charges.
In addition to scheduled reporting, the CTM will contact the Host to report CTM
configuration changes, tank level events, and high or low temperature conditions.