JUMO mTRON T Manual page 32

3 Modbus protocol description
ue is reached. The least significant bit (lsb) in each word is also transmitted first here. This ex-
ample yields the following arrangement:
Bit 48 to bit 53
Highest value
DV 49 to DV 54
The bit value from the data response must now be analyzed byte for byte:
Hexadecimal
10
00
00
00
00
01
01
00
This analysis and arrangement from the table yields:
• first low byte (highest word): 0001 0000
That means: the 5th spur starting with spur 49 has the value 1.
• The next to last high byte: 0000 0001
That means: the 9th spur starting with spur 17 has the value 1.
• Last low byte (lowest word): value 0000 0001
That means: the 1st spur has the value 1.
The spurs 1, 25, and 53 therefore have the value 1. The rest have the value 0.
32
Bit 32 to bit 47
...
DV 33 to DV 48
Decimal Binary
16 0001 0000
0 0000 0000
0 0000 0000
0 0000 0000
0 0000 0000
1 0000 0001
1 0000 0001
0 0000 0000
Bin
Bin
Bit 16 to bit 31
...
DV 17 to DV 32
Byte type
Low byte
High byte
Low byte
High byte
Low byte
High byte
Low byte
High byte
Bin
Bit 0 to bit 15
Lowest value
DV 1 to DV 16
Word type
Highest value
...
...
Lowest value