Data Flow Systems TCU800, Installation And Operation Manual

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C h a p t e r 6
Telemetry Configuration
Setting up the TCU as a component of the telemetry system enables you to remotely monitor conditions at the site and
control equipment from a central location via the HyperTAC SCADA software. For example, you can determine if a pump
is currently running and force it on if necessary. For the TCU to interface with the central site and the HyperTAC server,
it must have access to radio or network communications and be properly configured in HyperTAC’s Configuration Editor.
Hardware Configuration
There are several options for connecting the TCU to the telemetry system. A TCU can be installed with a DFS RTU station,
or it can interface with industry standard radios using the TCU’s RS-232 Modbus radio interface. Alternately, the TCU
can operate as a stand-alone unit and communicate with the central computer or server via its integrated radio or network
interface.
Using the TCU in conjunction with a radio-based telemetry system requires that you obtain an FCC-licensed radio frequency
if you do not already have a licensed frequency that can be utilized. Even when adding a site to an existing frequency, the
FCC requires that a complete application be submitted. DFS can assist you in obtaining a new licensed frequency or adding
a site to an existing frequency.
TCU Installed with DFS RTU
If the TCU is being interfaced with an RTU station, a Bus Extender Module (BEM) must be installed in the RTU and
connected to the TCU.
If the TCU’s pump controller process is being used, the TCU must be configured with the number of real modules already
on the bus. The TCU will then occupy the next available module addresses. If there are already four modules on the bus (A,
B, C, D), the TCU will start at module E. Note that this module offset also applies to a TCU configured as a legacy PCU.
If the TCU is being used as a pump controller or a legacy PCU, it must be configured as such in HyperTAC. A legacy PCU
occupies a single module address. A pump controller TCU occupies seven module addresses starting at the next available
modules address. The TCU responds as individual modules or a single PCU module based on how it is polled.
If the TCU is running a custom program, it is important to remember that the TCU defines its internal modules without
exception. Any additional modules added to the RTU must be addressed beginning with the module letter after the last
dummy module defined in the TCU.
Instructions for installing the Bus Extender Module appear on the next page.
Installing the BEM
Place the BEM in one of the RTU’s unused module slots.
Remove the corresponding address block or strap for the selected module slot.