Only treat positive values as errors...
Only treat positive values as errors...

Pointed out by:	wsk
Message-ID: <2f5a59e0e575d7487543eb395f2aeffd7a094e38@gddsn.org.cn>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase