beethoven_ii
Lifetime Supporting Member
I've been called to a site to assist with an ASi fault. The line has been down for a couple of weeks following a failure of the ASi power supply which I'm told blew up. Since then the plc (S7-314) has been replaced and the ASi master module which is a CP343-2 (6GK7 343-2AH00-0XA0). I'm online to the plc and it's perfectly happy, as is the ASi master module but no nodes are being detected and all the nodes in the field have solid red fault lights on. I've tried disconnecting the cabling to the field devices and connecting just one node onto a short piece of ASi cable and the master module doesn't detect it. The power light is on and the module is scanning through the network with the 10, 20 & B lights going on and off but nothing is being picked up. Has anyone had a similar experience and any ideas on what might be the cause of this?