Modbus/emux configuration and diagnostics – ADS Environmental Services IETG FlowHawk QR 775012 A4 User Manual

Page 369

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D-1

A P P E N D I X D

Modbus/EMUX Configuration and

Diagnostics

This appendix contains essential configuration, diagnostic, and
reference information and instructions regarding communication
and data exchange involving the FlowHawk

, EMUX, and RTU. It

specifically addresses the following issues:

• Setting up communication between the PC and EMUX

• Using the onboard diagnostics to configure and program

Modbus/modem communications, perform monitor and system
tests, and view system parameters

• Programming the RTU with Modbus data registers

• Interpreting the EMUX LED indicators

Note: An RTU (remote terminal unit) is an example of
the kind of customer-supplied equipment that uses Modbus
acquired data. Many other types of equipment may be
connected to FlowHawk; however, all will communicate as
described. A PLC (programmable logic controller), an I/O
(input/output) server, or other instruments, such as the
Telog

®

Ru-33, may be used in place of an RTU. IETG

references the RTU in this manual primarily because it is
the most common type of end-point hardware used with
SCADA systems.

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