Communication with PLC devices by the Emerson company

The
Emerson company (
http://www2.emersonprocess.com) manufactures meters, sensors and also
Smart Wireless Gateways. This device creates a
Wireless network that can be used for reading data from meters connected to such network and then pass the data forward via
OPC or
Modbus protocol for furher usage.
Communication by the Modbus protocol - Smart Wireless Gateway
The
Smart Wireless Gateway device supports
communication by the Modbus protocol.
This protocol is not set in the device as default. Therefore it is necessary to enable this protocol before the communication starts. For this communication in the PROMOTIC system can be used:
PmModbusMr - Driver for communication by the Modbus Master protocol.
For easy integration of this driver into the application it is handy to use:
For this driver, it is recommended to set the configurators:
The Modbus registry address of analogue values starts at 40000 (based on the documentation). However in reality these values are available at 0 address and higher. For example the value on Modbus registry address
40010 reads in the PROMOTIC system system from address
10.