Modbus TCP Specification
23 (46)
Dummy Data
For checking the data layout on the Modbus master side the gateway can be configured to
generate dummy data. See
Server Tab, p. 16
.
The following data will be represented via the Modbus interface according to the register layout
described in
Meter Data Format, p. 26
:
Ad-
dress
Value
Description
Decoded value
0
0x0002
Serial number of device, upper word
0x2993A
1
0x993A
Serial number of device, lower word
2
0x0001
Version of the communication protocol
1
3
0x006F
Firmware version of device
0x6F = 111: Version 1.11
4
0x519C
Timestamp of device system time, upper
word
0x519CC16D = 1369227629:Wednesday,
May 22nd 2013, 15:00:29 GMT+2
5
0xC16D
Timestamp of device system time, lower
word
6
0x0000
Empty field
7
0x0100
Type field of register set in upper byte
0x01: Device entry
8
0x0000
Empty field
9
0x0000
Empty field
10
0x00BC
Serial No. of meter, upper word
0xBC614E = 12345678
11
0x614E
Serial No. of meter, lower word
12
0x0443
3-letter manufacturer Code
0x0443: ABC
13
0x0102
Version (upper byte) and medium (lower
byte) of the meter
0x0102: Version 1, medium 2 (electricity)
14
0x519C
Timestamp of the meter, upper word
0x519CC164 = 1369227620:Wednesday,
May 22nd 2013, 15:00:20 GMT+2
15
0xC164
Timestamp of the meter, lower word
16
0x0000
Empty field
17
0x0200
Type field of register set in upper byte
0x02: Meter entry
18
0x0000
Empty field
19
0x0000
Empty field
20
0x0000
Meter value (integer), highest word
0xBC614E = 12345678
Calculation:12345678 * 10^-4 =
1234.5678 Wh
21
0x0000
Meter value (integer)
22
0x00BC
Meter value (integer)
23
0x614E
Meter value (integer), lowest word
24
0x449A
Meter value (float), upper word
0x449A522B = 1234.567800
25
0x522B
Mater value (float), lower word
26
0xFFFC
Scaling factor (exponent to base 10)
0xFFFC = -4: Factor = 10^-4
27
0x0005
Type field of register set in upper
byteand unit of value in lower byte
0x00: Meter value entry
0x05: Wh
28
0x519C
Timestamp of meter value, upper word
0x519CBBB3 = 1369226163:Wednesday,
May 22nd 2013, 14:36:03 GMT+2
29
0xBBB3
Timestamp of meter value, lower word
M-Bus to Modbus-TCP Gateway User Manual
SCM-1202-0096-EN 2.1
