medensat

function block

2 posts in this topic

hi , For Mitsubishi's GX IEC Developer 7.04, can anyone tell me the operation of these function blocks FROM_M, TOP_M, GT_E and LT_E. The help is very poor at this subject.

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From and TO instruction are use to read or write data from/to a special module. For instance read the analog value from an Analog card. S1 is the headadress (I/O adress) of the module K3 = 30 S2 is the BFM adress of the card (see module manual) S3 is for batching reading or writing more than one adress The P on the end of instruction is just pulse So it will only be executed once. GT= greater Than LT = Less Than The _E just means they also have an enable input which means they only work is the en input is True/active

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