However, it’s important to understand the functionality of these switches. Through the use of the Rotary Switches on the top of the 1756-ENBT module, it’s possible to set an IP address and connect through the front port. Rotary Switches & Resetting a 1756-ENBT Module to Factory Default In terms of software, we will be using RSLinx & BOOTP to establish the connection. We will be using the 1756-ENBT, a ControlLogix chassis 1756-A13 as well as a Programmable Logic Controller 1756-L61.
You’ll need to have access through a few pieces of software and hardware to follow the tutorial. In this article, we will explore what it takes to connect through these cards to a ControlLogix PLC (1756-L61) and start programming. There are several other variations, but those would be the most utilized cards in the field. The cards are as follows from the most recent (preferred) to the oldest (obsolete):
However, it’s still important to know how to work with them as many plants employ older versions of these modules.
These cards have been changed and upgraded since the initial release of the platform and multiple issues have been resolved. Within the ControlLogix family of Allen Bradley PLCs, this connection is established through a dedicated EtherNet / IP card (Note: the 1756-L8x PLCs have dedicated EtherNet ports and no longer require a separate module). One of the most challenging first steps in PLC programming is connecting to the hardware.
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