READING FROM ANALOG BLOK

[jerrycat]

If the function RD3A is use to read an analog input value from an FX2n-2AD blok, does it automaticly convert the value to digital one and store it in the destination. I can not simulate this instruction because it is not supported by the version of gx-simulator i am using many thanks

[Crossbow]

I would typically use the FROM instructions, not the RD3A. Check the manual for the FX2N-2AD and it gives example code using the TO/FROM instructions to configure and read from this module. That instruction was more designed for the FXON-3A which is 2 analog inputs and one analog output. It just happens to work with the FX2N-2AD since the addresses are the same for the reading part.

[jerrycat]

I am familiar with the to/from instruction for programming analog blok Chris. i would like to use the RD3A instruction in my future program because it is a little bit shorter. Also Mitsubishi recommend this instruction for the FX2n serie V 2.00 or higher. Does this instruction automaticlly do the conversion from analog to digital .

[Crossbow]

The instruction reads the buffer memories, same as the FROM instruction. The analog to digital conversion is done in hardware. It can be read as a 16 bit integer. All analog modules perform the conversion from the analog input signal to a discrete number in hardware. There's no function required for that. The number in the buffer memory location is the scaled value representing the analog value.

[Guest mohammad ali]

HI YOU CAN FINR MORE ABOUT RD3A FOM HARDWARE MANUL OF FX ON3A . IN WHICH ALL PARAMETTERS ARE DEFINE CLEARLY . FOR FX0N3A U HAVE DEIIFERENT BUFFER MEMORY AND FOR OTHER YOU HAVE OTHER SO PLZ SEE THE HARDWARE MANUAL FOR IT YOU WILLL FIND WHAT U R LOOKING FOR THANKS SYED MOHAMMAD ALI