Publication 1756-UM050A-EN-P - December 2001
1-2 About the 1756-ENBT Module
Hardware/Software
Compatibility
The 1756-ENBT module is compatible with the following product’s
firmware versions and software releases. Contact Rockwell
Automation if you need software or firmware upgrades to use this
equipment.:
What the Module Does
The 1756-ENBT module performs two primary tasks:
1. Control of real time I/O data (also known as “implicit messaging”)
in conjunction with a Logix controller. The 1756-ENBT module may
serve as a bridge between I/O modules and the network, or as a
bridge between the controller and the network.
2. Support of messaging data for configuration and programming
information, operator interfaces, etc. (also known as “explicit
messaging.”).
Support of Rack Optimized
and Direct Connections
The 1756-ENBT module supports both Rack Optimized and Direct
Connections. A direct connection is a real-time data transfer link
between the controller and the device that occupies the slot that the
configuration data references. A rack optimized connection is a
grouping of data from more than one I/O module into a single block
of data sent over a single connection.
Product Firmware Version/
Software Release
1756-ENBT module 1.x or higher
1756-ENET/A/B 1.18 or higher
1794-AENT 1.x
Logix 5550 Controller 8.1 or higher
PanelView All Ethernet compatible models
RSLogix 5000 software 8.1 or higher
RSLinx software 2.3 or higher
I/O
I/O
L
5
5
5
0
E
N
B
T
EtherNet/IP Network
E
N
B
T
I/O
I/O
E
N
B
T
I/O
I/O
E
N
B
T
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