3 easy steps to protocol conversion - … · 3 easy steps to protocol conversion ... red lion data...
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for more information call 1800 557 705 or email [email protected]
industrial.electrical.
automation.
tech tip
3 EASY STEPS TO PROTOCOLCONVERSION Summary...
PRODUCT/SERVICE
HOW THIS WILL ASSIST
Red Lion Data Station Plus
Easily connect RS485 Modbus variable speed drives to your Allen Bradley PLC on the Ethernet network.
Mapping data from a RS-485 PLC network
Have you ever wondered how to connect your RS485 Modbus variable speed drives to your Allen Bradley PLC via Ethernet? This Tech Tip illustrates just how easy it is with a Red Lion Data Plus.
It’s a simple 3 step process!
STEP ONEAssuming you already have Red Lion’s Crimson 3 programming software (If not that’s ok, it’s free via this link: www.redlion.net/crimson-30). Select the first protocol and device/s (in this example VSD/s) that will link with the Red Lion Data Station Plus via Modbus RTU using the RS485 port.
Peter Tennent | December 2016
STEP TWO & THREE NEXT PAGE
tech tip
for more information call 1800 557 705 or email [email protected]
industrial.electrical.
automation.
STEP TWOSelect the second protocol and device, (in this example an AB PLC) that will communicate with the Red Lion Data Station Plus via the DF1 protocol using the Ethernet port.
STEP THREECreate a ‘Gateway Block’ to exchange data between the VSD/s on the Modbus RS-485 network and the Allen Bradley PLC on the Ethernet network. In this example the data from VSD Modbus registers 400001 and 400002 is mapped to N007:0000 and N007:0001 registers in the Allen Bradley PLC. So not only have we now performed a protocol conversion between Modbus and DF1, we have also Ethernet enabled the RS485 VSDs!