Model 382068 V3.0 4/2005
25
Byte 1
This byte is fixed. If its value is not 02, the interface is compromised or the meter is
defective.
Byte 2
The 7 bits in Byte 2 represent the meter’s selected mode of operation (its function).
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
X
Volts
Amps Kilowatt 3 phase / 3 wire 3 phase / 4 wire Resistance
Diode
Bytes 3, 4, 5, and 6
Bytes 3 & 4 represent the lower LCD display reading in hex. Bytes 5 & 6 represent the
meter’s upper LCD reading in hex (for an ‘E0’ ‘DE’ value for bytes 3 through 6 the meter is
in OVERLOAD condition, meaning that the measurement it is taking is out of range).
Byte 7
Byte 7 is the ‘Status 1’ byte representing the state of the LCD display indicators.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bt (low battery)
Minus sign for
lower LCD display
Record Max Min Hold 00
01
10
PF/KW
V/A
PF/KVA
Byte 8
Byte 8 is the ‘Status 2’ byte representing the state of the LCD display indicators.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
n/a P-
P+
Minus
sign
for upper
LCD
display
Upper decimal
(refer to bit 2
for selection)
00 = 10
0
01 = 10
-1
10 = 10
-2
11 = 10
-3
Upper decimal
(refer to bit 0
for selection)
00 = 10
0
01 = 10
-1
10 = 10
-2
11 = 10
-3
Byte 9
End byte is fixed (03).
Commands
"D" + Year + Month + Date + Hour + Second
(1 Byte + 1 Byte + 1 Byte + 1 Byte + 1 Byte + 1 Byte + 1 Byte)
Function: Programs the meter’s clock
"Y" (1 Byte)
Function: Load the number of Recorded Sets + Last A Sa ID Code
(1 Byte + 2 Bytes + 1 Byte + 1 Byte)
"U" (1 Byte)
Function: Download Recorded Data
00 55 AA 00 + First Recorded Set + 00 55 AA 00 + Second Recorded Set +...
Each set contains: Time + Fu Down LCD + Up LCD + S S...
(6 Bytes + 1 Byte + 1 Byte + 2 Byte + 1 Byte + 1 Byte + 1 Byte)
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