It checks all assignment, e.g. I222=100 with the current values in memory. It checks all vectors, e.g. M11=M202->Y:$C002,8,16,S and assignments. If differences are found, they are printed out to stdout.
An attempt to verify programs and PLC is made. If a difference is found, the program terminates with a non-zero exit code. You can ignore programs and PLCs by using the noprogram command line option.
echo - prints out the transmissions to the PMAC
ether= specifies where the PMAC address [,port] is. This overrides the PMAC environment variable.
noprogram - ignores PLCs and Programs
verbose - prints out agreements too.