RY_Guthrie
Member
I have a surescan aircon 1 compressor interface that talks modbus rtu, 485. i know that I have communication up to the surescan as i ran a modbus slave simulator and I can read data back to my s7-1200 but I cannot get that surescan to give up any data. I know the baud, 9600 and i have node 1 and 2 but the manual I was given has no other data on comms, no modbus registers, nothing. I have tried running a modbus master simulator but I cannot get it to communicate. I am pretty sure its me doing something wrong as I have 2 of them doing the same thing. Anybody ever dealt with them before? Any trick to getting it to give up its data? And if so anybody know the modbus registers? thanks to everyone! software version SF3M02UN