Manual
71M6541 Demo Board REV 3.0 User’s Manual 
26    Rev 4.0 
lcd_idx 
Selects LCD’s cur-
rent display. 
0: Meter identification. (“#”) 
1: Display variation from calibra-
tion temperature, 0.1C 
2: Display mains Hz, 0.1 Hz 
3: mWh, total 
4: mWh total exported. 
5: mVARh, total. 
6: mVARh, total exported. 
7:mVAh, total 
8: Operating hours. 
9: Time of day 
10: Calendar date 
11: Power factor, total 
12: Angle between phase 0 & 1 
13: Main edge count, last accu-
mulation. 
14: KW, instantaneous total 
15: V, instantaneous max of all 
phases. 
16: A, total  
17: V, Battery (“VB”) 
18: Seconds, bad power (“BPS”) 
19: Seconds, tamper (- = tamper 
in progress) (“TS”) 
20: LCD Test 
Scrolling not standard for these: 
111: PF, phase 0 
112: Angle, phase 0 & 1 
114: KW, phase 0 
115: V, phase 0 
116: A, phase 0 
211: PF, phase 1 
212: Angle, phase 0 & 2 
214: KW, phase 1 
215: V, phase 1 
216: A, phase 1 
311: PF, phase 2 
312: Angle, phase 2.0 
314: KW, phase 2 
315: V, phase 2 
316: A, phase 2 
416: A, neutral (measured) 
3  )19  signed  16 
lcd_bit 
Defines sequence 
of LCD displays. 
The value is a bit mask that de-
scribes a scrolling display se-
quence. Each set bit permits a 
display with an lcd_idx value 
from 0..31. Each is displayed for 
7 seconds. Ordered by increas-
ing bit number. If value is zero, 
display does not change. 
0  )1A  unsigned  32 
mfr_id 
6
Manufacturer’s ID 
text string of the 
meter 
3 ASCII bytes, in MSB of 32-bit 
number. Least significant byte 
should be zero. For AMR 
demonstrations, sent as the 
manufacturer’s ID of the meter. 
“TSC”, 
0x54534300 
)1B  unsigned  32 










