A-B 1756-DHRIO

The Allen-Bradley 1756-DHRIO module is a communication interface module for a ControlLogix series programmable logic controller (PLC) manufactured by Rockwell Automation. It is primarily used to establish communication connections between the ControlLogix system and other devices, including the Data Highway Plus (DH+) network and the Remote I/O (RIO) network.

Product name

Chinese full name: Rockwell Automation ControlLogix series DH+ and RIO communication interface module
Full name: Rockwell Automation ControlLogix Series DH+ and RIO Communication Interface Module
Product description

The main functions of the 1756-DHRIO module:

DH+ communication: Supports the Data Highway Plus protocol and is used to connect other DH+ devices, such as PLC-5 and SLC.
RIO communication: Supports the Remote I/O protocol, which is used to connect remote I/O modules and expand the system’s I/O points.
Flexible configuration: The DH+ or RIO mode can be configured as required.
Modular design: easy installation and maintenance.