Rs-485 Interface (Optional); Communication Protocol; Standard Setting; Excerpt From Register Addresses - Pce Instruments Pce-Wsac 50 Bedienungsanleitung

6

RS-485 interface (optional)

The communication with the wind speed alarm controller PCE-WSAC 50 is enabled by the
MODBUS RTU protocol and the serial RS-485 port. This allows different registers containing the
measured wind speed, the wind scale and other information to be read.
6.1

Communication protocol


The registers can be read by means of the Modbus function 03 (03 hex) and written into
by the function 06 (06 hex).
Supported baud rates
Data bits
Parity bit
Stop bits
Data type of registers
6.2

Standard setting

Baud rate
Parity
Stop bit
Address
6.3

Excerpt from register addresses

Register Register
address (dec) address (hex)
0000 0000
0001 0001
0034 0022
0035 0023
0080 0050
0081 0051
0084 0054
1200, 2400, 4800, 9600, 14400, 19200,
38400, 56000, 57600, 115200
8
None
1 or 2
16-bit unsigned integer
9600
None
1
123
Description
Current wind speed in m/s
Current wind scale
Pre-alarm
Alarm
Modbus address
Baud rate (12 = 1200 baud, 24 = 2400 baud,
etc.)
Stop bits (1 or 2)
© PCE Instruments
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R/W
R
R
R/W
R/W
R/W
R/W
R/W