Dear Experts,
i am facing a problem regarding plc to plc communication .
i have 2 plc that are communicating through industrial switch . one plc is s7-1200 and second is Fatek FBS-40ma with FBS-CBE ethernet bd card. both plc are connected to an ethernet industrial switch. Siemens HMi is also connected to that industrial switch as well.
i have both plc programs back up. everything is running smooth but i want both plc as back up. so i bought both plc same model new one.
i have replaced the siemens plc with a new one and inserted program in it . everything works fine. but when i replace fatek plc with new one with program . siemens doesnot communicate with fatek.
any suggestion will be a life saving