A 6
Meaning of individual bits:
Byte-Nr. Bit-Nr. Content Explanation
Byte 1 Bit 7 T-Bit Summertime switching, setting the time
Bit 6 U-Bit Shortened registration period due to power failure or time change
Bit 5 M-Bit Parameter change
Bit 4 A-Bit Alarm or error message (collective message)
All warnings and device faults
Exception: Warnings 03/02 “power dip” don’t stored (from version
1.04.03 up).
Bit 3 S-Bit Transmitted during summertime (MESZ)
Bit 2 0 Unused
Bit 1 NP-Bit Power failure during the whole registration period
Bit 0 L-Bit Unused by default
if enabled via DLXPARA: change of state of LOG control inputs
Byte 2 0100 0000
or
aaaa mmmm
Default value $40 (hexadecimal notation);
only if enabled via DLXPARA: rate status AT-MT, however only the
energy rate (if energy values are transmitted) or the demand rate
(if demand values or energy increments are transmitted) will be
set.
Note: S-Bit not marked(:=0) → Wintertime (:=MEZ)
Examples for the device status in the registration period:
Device status Bit pattern Explanation
00 40
0000 0000 0100 0000 No events, wintertime
02 40 0000 0010 0100 0000 Power failure during whole period(NP-Bit=1), wintertime
08 40 0000 1000 0100 0000 No events, summertime (S-Bit=1)
0A 40 0000 1010 0100 0000 Summertime (S-Bit=1), power failure during whole peri-
od (NP=1)
10 40 0001 0000 0100 0000 Alarm (A-Bit=1), wintertime
20 40 0010 0000 0100 0000 Parameter was changed (M-Bit=1), wintertime
50 40 0101 0000 0100 0000 Shortened period (U-Bit=1), Alarm (A-Bit=1), wintertime
01 40 0000 0001 0100 0000 Logic input has changed, wintertime
00 00
0000 0000 0000 0000 No events, AT1 or MT1
00 10
0000 0000 0001 0000 No events, AT2
00 02
0000 0000 0000 0010 No events, MT3
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