C.16 Option 28: Power System Time, Frequency and Phase Monitor 161
C.16.10 Option 28 Commands
Return System Frequency
Command: FS
“FS” returns Option 28 system frequency.
Response: SS ff.fff
C
Where: SS = UTC seconds
ff.fff = frequency
Return System Frequency Deviation
Command: FD
“FD” returns the system frequency deviation.
Response: SS±f.fff
C
Where: SS = UTC seconds
f.fff = frequency
Return System Phase
Command: PS
“PS” returns the system phase.
Response: SS±ppp.pp
C
Where: SS = UTC seconds
ppp.pp = phase, 0 to 360 degrees
Return System Time Deviation
Command: TD
“TD” returns the system time deviation.
Response: SS±tt.tttt
C
Where: SS = UTC seconds
tt.tttt = time deviation