21
22
PARITY Parity Setting
Parity can be entered as none, odd or even.
MODBUS RTU PROTOCOL
Standart MODBUS RTU message is shown below.
T
ADDRESS
8 BIT
FUNCTION
8 BIT
DATA
N x 8 BIT
CRCH
CRCL
T
Modbus Functions:
The T times corresponds to a time in which data must not be exchanged on the communication bus
to allow the connected devices to recognize the end of one message and the beginning of another.
This time must be at least 3.5 characters at the selected baud rate. Adress range (1-247) is address
of the connected device. The data field contains data sent to the slave by master or data sent to
master by slave. CRC is a error check method by using MODBUS RTU protocol and consists of 2
bytes.
03H
READ HOLD REGISTERS
06H
PRESET SINGLE REGISTER
10H
PRESET MULTIPLE REGISTERS
2BH
READ DEVICE INFO
BAUDRATE Baudrate Settings
Enter one of the 2400 bps, 4800 bps, 9600 bps, 19200 bps, 38400 bps values as stated in the
communication software.
BAUDRATE
BAUDRATE
BAUDRATE
SET
9600
9600
SET
Selected
parameter
is
displayed
PaRITY
PaRITY
PaRITY
SET
NONE
EVEN
SET
Selected
parameter
is
displayed