Schneider Electric iEM3100 Variable data structure telegram information, Fixed data header

iEM3100 / iEM3200 / iEM3300 series user manualCommunications via M-Bus

Variable data structure telegram information

Fixed data header

Byte 1-4	Byte 5-6	Byte 7	Byte 8	Byte 9	Byte 10	Byte 11-12
Identification No.	Manufacturer	Version	Medium	Access No.	Status	Signature
Serial number of the meter in an		Firmware version of the
8-digit, BCD coded format	4CA3 hex =			Counter of successful	Indicates M-Bus
		communications board	02 hex (electricity)			Not used
The serial number can also be	Schneider Electric			access attempts	application errors
found on the meter front panel.		10 = version 1.0

Data record header information

Data formats used by the meter (DIF bits 3-0)

NOTE: x in the hex value is determined by bits 7-4 of the DIF.

Format	bin	hex
No data	0000	x0
8-bit integer	0001	x1
16-bit integer	0010	x2
24-bit integer	0011	x3
32-bit integer	0100	x4
32-bit real	0101	x5
48-bit integer	0110	x6
64-bit integer	0111	x7
Variable length	1101	xD

Data function types used by the meter (DIF bits 5-4)

Function type	bin
Instantaneous	00
Maximum	01

Primary VIF used by the meter

NOTE: E denotes the extension bit; x in the hex value is determined by bits 7-4 of the VIF.

Primary VIF	bin	hex	Description
Energy	E000 0011	x3	Wh with a resolution of 100
Power	E000 1110	xE	kW with a resolution of 103
Time point	E110 1101	xD	Date and time in data type F, as detailed in the M-Bus
			protocol documentation
Bus address	E111 1010	xA	Data type C (unsigned integer), as detailed in the M-Bus
			protocol documentation
Primary VIFE	1111 1101	FD	Indicates that the first VIFE is a primary VIF extension
Manufacturer-specific VIFE	1111 1111	FF	Indicates that the next VIFE is manufacturer specific

Primary VIFE codes used by the meter

The primary VIFE codes in the table below are used by the meter when the VIF equals FD hex (1111 1101 bin).

NOTE: E denotes the extension bit; x in the hex value is determined by bits 7-4 of the VIFE.

Primary VIFE codes	bin	hex	Additional information
Manufacturer	E000 1010	xA	—
Model	E000 1100	xC	—
Voltage	E100 1001	x9	Volts with a resolution of 100
Current	E101 1100	xC	Amps with a resolution of 100
Digital output	E001 1010	xA	—
Digital input	E001 1011	xB	—

DOCA0005EN-04 77