Appendix D – RS-485 interface with Modbus protocol (RTU)
D.1 Prerequisites
䊳
Transmission parameter 1 stop bit, even parity
䊳
Transmission speed Factory setting: 9600
䊳
RS-485 interface protocol Modbus
D.2
"
Read Holding Register
"
function (0x03)
Register name
Register-
number Type
Value range
Factory
setting
Access
mode
Unit
䊳
Bus address
0000
unsigned word 1 … 255
1
R
–
䊳
Baud rate
0001
unsigned word 0
➝
9600
1
➝
38400
2
➝
57600
2
➝
115200
57600
R
[Bit/s]
䊳
–
0002
䊳
Current flow
velocity
0003
unsigned word 0 … 15000
R
[mm/s]
䊳
Average flow
velocity
0004
unsigned word 0 … 15000
R
[mm/s]
䊳
Tilt anglel
0005
unsigned word 0 … 360
R
[°]
䊳
Internal filter
type
0006
unsigned word 0
➝
IIR filter
1
➝
Floating mean
1
R
[1]
䊳
Filter length
0007
unsigned word 1, 16 … 256
50
R
[1]
䊳
Flow direction
0008
unsigned word 0
➝
Towards sensor
1
➝
Away from sensor
R
[1]
䊳
Setting
Flow direction
0009
unsigned word 0
➝
both
1
➝
Towards sensor
2
➝
Away from sensor
0
R
[1]
䊳
Measuring-
sensitivity
000A
unsigned word 0 … 100
R
[1]
䊳
Signal intensity
000B
unsigned word 0 … 2048
R
[1]
䊳
–
000C
䊳
Firmware version
000D
unsigned word 000 … 999
R
–
䊳
–
000E
䊳
Gain factor
000F
unsigned word 0
➝
1
1
➝
2
2
➝
5
3
➝
10
4
➝
20
5
➝
50
6
➝
100
7
➝
200
R
[1]
䊳
–
0010
30
Summary of Contents for SVR 100
Page 1: ...English Operating Instructions Surface Velocity Radar OTT SVR 100...
Page 2: ...We reserve the right to make technical improvements...
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