I have a control logix PLC 1756 with Ethernet network.
I ran into following problem:
Our Ethernet/IP adapters for PowerFlex40 Frequency drivers wear out very often, for example, we have about 10 PowerFlex40 with adapters and in average every 6 month 1 or 2 of them stop respond to PanelView. Before now we just bought new one from our vendor and replace them.
But now I want to find exact reason of it.
When adapters stop respond to PanelView indicators of the adaptors are following:
• Port – solid green;
• Mod – flashing green;
• Net a – solid red;
• Net B – Off.
According to manual for 22-COMM-EE adapters (22comm-um004_-en-p) problem is “The adapter failed the duplicate IP address detection test.”. And I have to “Configure the adapter to use a unique IP address and cycle power.”
First of all I do not understand why IP address may stop being unique?
I have no experience in such matters, so I want to make sure. All I need is to change IP address of adapter through RSLogix 5000 and that’s it? Or will I have to change IP address of adapter somewhere else in controller program?
And when I try to connect to adapter through RSLogix5000 I have a pop-up window that adapter unable for connection. How else could I connect?
Thanks in advance