Experimental Physics and
Industrial Control System

Hi,

I have a status word field defined as ULONG, and would like to display the individual

bits in edm with CALCs ("<<", ">>" and "&" etc).  When I tried to use the 3 MSBs,

for instance when the status word is 0xe0000000, only

CALC\\\{(A>>31)&1}("Status PV")           seems to return "1"

but both (later within the same edm file):

CALC\\\{(A>>30)&1}("Same Status PV")

CALC\\\{(A>>29)&1}("Same Status PV")

seem to return "0".

It seems edm gets it as a negative number.

Am I using the CALCs wrongly?  Or should I avoid using the MSB bit?

Thank you very much, best regards,

Dehong