minimum & maximum analog counts in PLC

hi friends,

what is the minimum & maximum counts we get in analog inputs of a PLC.

whether it is same for all models of siemens PLC or it varies depends upon model.

Stop banging your head, try Google instead: http://www.lmgtfy.com/?q=siemens+analog+input+format

Kalle

it goes from 4 bit up to 24 bit different on every card.

Depends on the brand, depends on the card - read the manual for the card you have and all will be magically revealed.

It depends on the resolution of the analog card you are using.


"Resolution of an 8-bit binary number is 1 part in 256, values 0 to 255 :
Sometimes the 8-bit number is "signed binary", which still has a resolution of 1 part in 256, but the numeric range is -128 to +127

Resolution of a 12-bit binary number is 1 part in 4096, values 0 to 4095
Sometimes the 12-bit number is "signed binary", which still has a resolution of 1 part in 4096, but the numeric range is -2048 to +2047

Resolution of a 16-bit binary number is 1 part in 65536, values 0 to 65535 : Sometimes the 16-bit number is "signed binary", which still has a resolution of 1 part in 65536, but the numeric range is -32768 to +32767

Resolution of a 32-bit binary number is 1 part in 4,294,967,296, values 0 to 4,294,967,295
Sometimes the 32-bit number is "signed binary", which still has a resolution of 1 part in 4,294,967,296, but the numeric range is -2,147,483,648 to +2,147,483,647"


taken here:

http://www.plctalk.net/qanda/showthread.php?t=143