Mitsubishi PLC analog problem

roxtech

Member
Join Date
Mar 2008
Location
Township Lahore
Posts
198
Hi Dears,
we use mitsubishi plc Fx1N with one digital input extension module, one digital out put module and two Fx2n-8AD module for thermocouple k type. problem is when all thermocouple disconnect. we reads D1 190 to 220.
D2 to D8 have 320 to 400 value. while when we connect k type at ch#1 it show 438 to 442. My question is how much value we get at bef#10 which move to D1? Why value variation? we use code.

M8002 on {To k0 k0 h9999 k1}
{To k0 k1 h9999 k1}
(T0 k50)
T0 on {from k0 k10 d1 k8)
 

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