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7816 CHANNEL_SEL for monitoring CHSIGN

Question asked by dBC on Jun 4, 2013
Latest reply on Jun 24, 2013 by pminc48

I'm trying to experiment with the 7816's CHSIGN register on the eval board with the eval s/w.  Regardless of whether I write 0x41ff or 0x1ff to the COMPMODE register,  the CHSIGN registers always seem to monitor channels A-C.

 

When I flip a CT connected to Channel E, I can see the corresponding real and reactive power registers go negative, but it never shows up in CHSIGN.   If I flip a CT connected to Channel B, CHSIGN reads back 0x22 regardless of whether COMPMODE is set to 0x41ff or 0x1ff.

 

Any ideas on what I'm doing wrong?

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