STAMOS S-LS-96 Manual De Instrucciones página 52

3 Set-Run-
Stop
Caution: When the communication address is 0x00H, it is a broadcast mode,
i.e. all slaves can receive data, i.e. you can control data of many power
supplies at one time.
2. Modbus RTU - communication protocol
a) Types and formats of communication data
The transmission of information is asynchronous and takes bytes as units.
The communication information transmitted between master and slave is in
10-bit word format:
Word format (serial
data)
Start bit
Data bit
Parity bit
Stop bit
b) Communication data (frame) format.
Data format
Data length
c) Communication data transfer process
A command is sent by the master to the slave along with the address code.
Only the slave with the address specified by the master can receive the
command and read the information it contains.
If the CRC check passes correctly, the slave will execute the command and
then send return data to the host. The information returned includes the
address code, function code, data from the completed job, and CRC check
Power
output/stop
settings
10-bit binary
1-bit
8-bit
None
1-bit
Address Function
code code
1-bit 1-bit
2 Power
supply in
overcurrent
mode
0 Power off
1 Power on
Data area
N-bit
1006H
CRC control
16-bit CRC
code
(redundant
cyclic code)