Siemens Milltronics BW500 Operating Instructions Manual page 142

Communications
11.5 Modbus RTU/ASCII Protocol
Format Register:
Bits
1 - 8
9 - 11
12
13
14
15
16
The bits listed above are in order from least to most significant:
16
For example, to format the output value so that it is shown with two decimal places shifted to the
left the format bits would look like this:
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
The value sent to the BW500 and BW500/L is 0001001000000000 binary or 4608 decimal.
The value 4608 is sent as an integer to register 40,093 to format the output words 40,094 and
40,095 accordingly.
140
15 14 13 12 11
0 reserved
0 most significant first
0 read
1 float format
0
decimal offset +2
0
1
0
0
0
0
no error code
0
0
0
0
0
Values
0 - 2
0 - 7
0/1
0/1
0/1
0/1
10 9 8 7
Operating Instructions, 12/2016, A5E33482052-AD
Description
Error Code
decimal offset
decimal shift, Right (0) or Left
(1)
Numeric format: Fixed (0) or
FLoat (1)
Read or Write of data, Read (0),
Write (1)
Word order: Most Significant
word first (0), Least Significant
Word first (1)
Reserved
6 5 4 3
BW500 and BW500/L
2 1