2 - controllogix communications, Controlnet bridge module, Controlnet cabling – Rockwell Automation 1794 FLEX I/O System with ControlLogix for SIL2 User Manual
Page 19: Controlnet module diagnostic coverage, Ethernet/ip bridge module, Chapter 2, Controllogix communications, Chapter
1
Publication 1794-RM001G-EN-P - December 2011
Chapter
2
ControlLogix Communications
This chapter discusses the communication modules used in a ControlLogix
SIL2 system.
ControlNet Bridge Module
The ControlNet bridge modules (1756-CNB & 1756-CNBR) provide for the
communications between ControlLogix and FLEX I/O system.
ControlNet Cabling
For remote racks, 802.3 compliant shielded or unshielded twisted pair cable is
required for EtherNet/IP. Although it is not a requirement to use redundant
media with the 1756-CNBR, it does provide higher system availability.
Redundant media is not required for SIL2 operation.
ControlNet Module Diagnostic Coverage
All communications over the passive ControlNet media occur via CIP, which
guarantees delivery of the data. All modules independently verify proper
transmission of the data.
EtherNet/IP Bridge Module
The EtherNet/IP bridge modules (1756-ENBT, 1756-EN2T, 1756-EN2TR,
and 1756-EN2TXT) provide for the communications between ControlLogix
and FLEX I/O system.
For information about:
See page: