IntelliChlor IC-40 Chatter

Short chlor frame (with active output percent).  Every time the IC-40 toggles active/inactive these seem to change between zero and the setpoint.  So when the setpint is 50% this will display either zero or 50 as it cycles.  When idle it always generates a zero value.  Sometimes I see byte B as a 14, other times an 11.  Not sure what it means.  Byte A is nearly always 50.

            P  C
            C  H
<hdr> A  B  T  K  <trm>
10 02 50 11 32 A5 10 03
10 02 50 0  0  62 10 03 -- 0%
10 02 50 11 32 A5 10 03 -- 50%
10 02 50 11 3C AF 10 03 -- 60%
10 02 50 11 47 BA 10 03 -- 71%
10 02 50 11 4B BE 10 03 -- 75%
++++++++++++++++++++++++++++++

Long chlor frame (with unknown values).  These come less often and I haven't been able to decode them yet.

                 C
                 H
<hdr> A B  C  D  K  <trm>
10 02 0 12 4B 80 EF 10 03
10 02 0 12 4B 80 EF 10 03
10 02 0 12 4C 80 F0 10 03
10 02 0 12 4B 80 EF 10 03
10 02 0 1  0  0  13 10 03
10 02 0 12 4B 80 EF 10 03

++++++++++++++++++++++++++++++

Sporadic broadcast (checksum does not calc out like other 10 02/10 03 frames).  No idea BUT this is the response to a salinity check from the panel.  You'd think the value would be in here but no luck so far.

10 2 0 3 0 49 6E 74 65 6C 6C 69 63 68 6C 6F 72 2D 2D 34 30 BC 10 3
           I  n  t  e  l  l  i  c  h  l  o  r  -  -  4  0