ADS Environmental Services FlowShark QR 775002 A4 - Manual (Page 24)

System Overview 2-11
The Communications board (ADS p/n 5000-0516) provides multi-
tasking/handling of all communications processes. It interfaces with
the land-line or wireless modems, as well as manages local serial
communication requests. A seven-segment (SS) light-emitting diode
(LED) located on the Communications board indicates the current
monitor communication activity.
The Communications board also is responsible for gathering real-
time information from the other boards, and then, as a Modbus
slave device, for making that information available (provided the
monitor is configured to support Modbus communications). All
Modbus Holding Register mapping and communication requests are
managed by the Communications board.
FlowShark Communications Board (ADS p/n 5000-0516)
Voltage Regulator Board
The Voltage Regulator board (ADS p/n 5000-0518) regulates and
distributes power to the Analog, Comm, DSP, and Analog I/O (if
installed) boards. It regulates the voltage supplied from the internal
battery or external power to the FlowShark boards.