Communication (Holding Register); Setup (Holding Register) - Siemens SITRANS LR120 Modbus Operating Instructions Manual

Data transmission via the Modbus communication protocol takes place in different
operating modes:
•
•
The data exchange between field device and host is done via registers. The input
registers only allow read access, holding registers both read and write access.
The device supports the above mentioned points. The following shows the device-
specific details required for this.
You can find further information to Modbus on
www.modbus.org].
12.3

Communication (Holding Register)

Register
Number
200
201
202
203
206
250
12.4

Setup (Holding Register)

Register
Number
3000
3200
3201
3401
SITRANS LR120 Modbus
Operating Instructions, 10/2022, 62709-76-01, A5E49829030
Modbus ASCII (data transmission as ASCII signs)
Modbus RTU (data transmission is binary signs)
Register Name
Address
Baud Rate
Parity
Stopbits
Delay Time
Levelmaster Address
Register Name
Byte Oder (Floating
point format)
Distance unit
Temperature unit
Min.-Adjustment
Technical data and dimensions
12.3 Communication (Holding Register)
www.modbus.org [https://
Data type Configurable Values
uint8 1 ... 255
r/w
enum16 1200, 2400, 4800,
9600, 19200, 38400,
r/w
57600
enum8 0 = None, 1 = Odd, 2 =
Even
r/w
enum8 1 = One, 2 = Two
r/w
uint16 10 ... 250
r/w
uint8 0 ... 31
r/w
Data type Configurable Values
enum8 0=ABCD, 1=CDAB,
2=DCBA, 3=BADC
r/w
enum16 44=ft, 45=m, 47=in,
49=mm
r/w
enum16 32=°C, 33=°F, 35=K
r/w
float32 0 ... Measurement
range
r/w
Unit Default
Value
– 246
– 9600
– 0
– 1
ms 50
- 31
Unit Default
Value
– 0
- m
- °C
- 0
51