alw_off

Hi Steve Thanks for the reply. The CMM 2 card is in slot 5 so it does not require any supporting ladder logic. I spoke with a former GE supply guy who you probably know and he was pretty sure you could not use both ports as slave at the same time. I was running both at 19200. It is not a show stopper. I only need the LM6PC to occasionally interrogate the registers to help in understanding the old HMI (Nematron) mapping. FYI - I think back in the day you could use a CMM IO card for the purpose of talking to multiple masters. I believe these cards did need supporting ladder logic. Thanks again for your help and the countless other posts you are on regarding GE hardware.   Steve

I finally got my LM6PC software to communicate with my series six CCM 2 card. The CCM2 has 2 ports. I am trying to use both ports at the same time but when i go online with my lm6pc software it kicks my nematron HMI offline. I believe both ports are independent so i am not sure why the HMI is getting kicked off. I have another CCM card and would be open to having 2 CCM cards in my rack but when i tried this both cards failed (bottom LED in OFF state). FYI - running Win 10 with DosBox 0.74 using docking station com1. Fought this thing for 2 days until i realized i was using the wrong CPU ID.  Project background - replacing series six and genius blocks with RX3i and EP IO. Trying to reverse engineer nematron HMI and wanted to be able to view data tables while surfing the HMI to map out the IO addresses. Thanks for any help. Steve

Nice solution! thanks for the reply

per a spec i am bound by i must supply surge protection for each individual PLC input in my panel. These devices are all of the voltage free (dry contact type) where the 120VAC will be supplied by my panel. i found a WAGO MOV to ground terminal block and i believe this is the appropriate device to comply with the spec and protect my PLC input card from voltage transients. Has anyone used these devices before? Thanks for any help.