A-B 1756-DHRIO
The A-B 1756-DHRIO module is A communication interface module designed by Rockwell Automation (Allen-Bradley) for its ControlLogix family of programmable logic controllers (PLCS). It is mainly used to enable communication between different devices in the ControlLogix system, including DH+
networks and remote I/O.
Main function
DH+ Network bridge: Connect the ControlLogix system to the DH+ network for communication with other DH+ devices.
Remote I/O Scanning: Scans the I/O modules on the remote I/O rack and transfers the I/O data to ControlLogix PLC.
Communication protocol conversion: It can realize the conversion between different communication protocols.
Product parameters and specifications (typical values, refer to the product data manual)
Number of ports: 2
Communication rate: DH+: 57.6Kbps, remote I/O: 57.6Kbps, 115.2Kbps, 230.4Kbps
DH+ connection: Each DH+ channel supports a maximum of 32 DH+ messages
Remote I/O connections: Each remote I/O channel supports up to 32 logical rack connections and 16 block transport connections