hi,
i need some advice, so help me if someone can!
i use analog input AIW0 from analog module EM235. Signal on the input AIW0 is 0(4) ... 20 mA (0...32000), but that signal is unstable! when on the calibrator mA(simulator of mA), which is connected in the analog input AIW0, is set 0 mA, 4 mA or 20 mA on the Status Chart, in the program STEP 7, i see that analog value is unstable. Example:"when on the calibrator mA is set 20 mA (32000), in the Status Charts that analog value is changing within 31998 ... 32018" . or, that is ok!? Calibrator mA is surely O.K., brand new.
Because of that instability, i can't really correctly calibrate analog value with offset (0) and gain (32000).
if You have some more advices about analog inputs and outputs, please send.
thank You very much!
sarac
i need some advice, so help me if someone can!
i use analog input AIW0 from analog module EM235. Signal on the input AIW0 is 0(4) ... 20 mA (0...32000), but that signal is unstable! when on the calibrator mA(simulator of mA), which is connected in the analog input AIW0, is set 0 mA, 4 mA or 20 mA on the Status Chart, in the program STEP 7, i see that analog value is unstable. Example:"when on the calibrator mA is set 20 mA (32000), in the Status Charts that analog value is changing within 31998 ... 32018" . or, that is ok!? Calibrator mA is surely O.K., brand new.
Because of that instability, i can't really correctly calibrate analog value with offset (0) and gain (32000).
if You have some more advices about analog inputs and outputs, please send.
thank You very much!
sarac