Allen-Bradley ControlLogix 1756-DHRIO User Manual

Below you will find brief information for 1756-DHRIO. This manual describes how to understand, configure, and troubleshoot your ControlLogix Data Highway Plus/Remote I/O communication interface module. It provides step-by-step procedures on how to use the module to send DH+ messages and connect ControlLogix controllers to remote I/O.

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Allen-Bradley 1756-DHRIO User Manual: AI Chat & PDF Download | Manualzz

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Key features

  • DH+ Messaging
  • CIP Messaging
  • Remote I/O
  • Routing Table
  • Alphanumeric Indicators
  • Supports Multiple Networks

Frequently asked questions

The module supports Data Highway Plus (DH+) Messaging, Control and Information Protocol (CIP) Messaging, and Remote I/O.

You should consider performance requirements, maintenance, and possible future changes to the link. Also, use 1770-CD (Belden 9463) cable for your connection.

Refer to Table 2.3 in the manual, which lists compatible devices and the necessary cables.

The alphanumeric indicator displays a sequence of messages, including channel status, network type, and node addresses, aiding in troubleshooting.

The maximum cable length for DH+ depends on the transmission rate. 57.6 kbps - 3,048m (10,000 ft), 115.2 kbps - 1524m (5,000ft), 230.4 kbps - 762m (2,500 ft)
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