hi everybody, please help me
i have plc cp1e type na, there are 2 analog input which are in cio 90 and cio 91, but when i programmed and monitor the result is zero, i use 2 electrode couple wire as ph sensor to read by input analog plc, but when i monitoring in a0 and a1, the value increasing, what doest it means?
picture 1 : manual cio 90 and cio 91
picture 2 : my programme
i have plc cp1e type na, there are 2 analog input which are in cio 90 and cio 91, but when i programmed and monitor the result is zero, i use 2 electrode couple wire as ph sensor to read by input analog plc, but when i monitoring in a0 and a1, the value increasing, what doest it means?
picture 1 : manual cio 90 and cio 91
picture 2 : my programme