ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 369)

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.