Ethernet master devices talk to multiple serial slave devices

Connect all Modbus devices over the Ethernet network…

Most host computers and newly developed PLCs support the Ethernet interface and run Modbus/TCP. NPort 6110 Modbus Gateway is needed to link discrete Serial Modbus Devices for data collection and control.

Each NPort 6110 supports Modbus/TCP over Ethernet, which allows up to 7 connections. The software configurable serial interface supports either RS-232 or RS-422/485. In RS-232/422 modes, NPort 6110 can be connected to 1 serial device. Under RS-485 mode, NPort 6110 supports up to 31 serial devices, which is the most popular application for factory floor applications.

Host

 

Modbus/TCP

Computer

PLC

Master devices

Ethernet

 

 

NPort 6110

 

NPort 6110

RS-232

 

RS-485

 

Modbus/RTU

 

 

 

 

Modbus/ASCII

 

 

Slave devices

Flow meters

DrivesLoop controller Power measurement (up to 31 devices)

3-2

Page 24
Image 24
Moxa Technologies 6110 user manual Connect all Modbus devices over the Ethernet network…