ControlLogix
Member
Hi guys,
I have a feeling I know the answer to this one already and while you guys will probably confirm this, I need a workaround!
I have pressure probes (20 in total, 1 per injection moulding machine) that are wired up to there respective Injection moulding controllers (industrial PCs). The signals going into the IPCs are 4-20mA signals. I want to "take a copy" of this signals to a new PLC which is being built for information gathering.
Now, somewhere in the back of my head, something tells me that I can't do this. I know I can do it with my digital I/O (it works well) but can somebody out there explain to me why not and what I can do about it.
Is it that I am not splitting the analog signal (i.e. going to two different sources) and thus reducing the current and sending spurious data to both the IPC and PLC?
Any help would, yet again, be very much appreciated,
Best Regards,
Colm
I have a feeling I know the answer to this one already and while you guys will probably confirm this, I need a workaround!
I have pressure probes (20 in total, 1 per injection moulding machine) that are wired up to there respective Injection moulding controllers (industrial PCs). The signals going into the IPCs are 4-20mA signals. I want to "take a copy" of this signals to a new PLC which is being built for information gathering.
Now, somewhere in the back of my head, something tells me that I can't do this. I know I can do it with my digital I/O (it works well) but can somebody out there explain to me why not and what I can do about it.
Is it that I am not splitting the analog signal (i.e. going to two different sources) and thus reducing the current and sending spurious data to both the IPC and PLC?
Any help would, yet again, be very much appreciated,
Best Regards,
Colm