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Hello Matthias,

Can you tell me what is PLM-RS232? By the name it is an extension module to have another RS232 port. I was thinking that if you have 2 x RS232 ports then you can connect one Eheim...

Ok, that means that is not possible and that's it. And you don't know if you are going to update the firmware in the future. :(
Ok, thanks again for the answers, even if this is not helping me.
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Ok, that means that in the future you can update the firmware in order to deal with 2 RS232 ports? I already bought 2 Eheim controllers and 1 PLM-RS232 and if it is going to be possible in the future...

Maybe I was wrong, I was checking again the website and I found an extesion module for another RS232 - GHL PLM-RS232 PL-0601. I think that with this I can have another RS232 port, that means I can...

And an extension module to have 2 serial ports RS232 is not available. In this case I will have to control only 1 filter and the other one is going to be independent. Maybe GHL should think to have...

Hello,

Is it possible to control 2 Eheim 3e filters? The GHL Eheim controller has a loop through on the RS232 port and that means you can connect 2 controllers in order to control 2 filters?
I am...