program text

could anyone help me with the comment MW102 :x20. i understand
MW102 BUT CONFUSED WITH x20. I am using a TELEMECANIQUE MODICO
PLC. Grafcet steps are written as %x1, %2, %x3 etc. the plc
communicates with a megalis unit where certain parameters are stored
if this would be of help.

I beleive what your seeing there is WORD EXTRACT BTIS

The number of the bit extracted is added to the word address.

Example: %MW10:X4 would be bit 4 of internal word %MW10


Hope this helps.

Been awhile since i worked with PL7 software