
5-1
C H A P T E R 5
Modbus
Many newer SCADA and process control systems connect wirelessly to measurement devices through a
modem to quickly access process values. One of the industry standard protocols through which this occurs
is Modbus. The
ADS ECHO
™
monitor can serve as a Modbus slave device and provides process values
based on Modbus holding registers wirelessly through the internal cellular modem.
Note:
The 9000-
ECHO
-4VZ using Verizon LTE-M communications does not support Modbus
TCP/IP unless the ADS SIM card has been replaced with a SIM card activated on the customer’s
Verizon VPN.
This chapter contains connection and reference information regarding Modbus wireless data exchange and
Modbus data registers.
Summary of Contents for ECHO 9000
Page 13: ...Introduction and Overview 1 9 First Page of the ECHO IECEx Certificate of Conformity ...
Page 16: ...1 12 ADS ECHO Manual Sample ECHO Declaration of Conformity Page 1 ...
Page 17: ...Introduction and Overview 1 13 Sample ECHO Declaration of Conformity Page 2 ...
Page 61: ...Hardware Installation 3 21 Manhole Depth and Physical Offset Measurements ...