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LM P RS485 Data Logger
7.1
COMM
(C
OMMUNICATION
T
YPE
)
➢
In modbus serial communication , there are two modes - RTU and ASCII. The two
modes are incompatible so a device configured for ASCII mode cannot
communicate with one using RTU.
➢
Modbus ASCII messages require twice as many bytes to transmit the same
content as a Modbus RTU message.
➢
To set the communication type select the options as shown in figure 27.
7.2
BAUD
(B
AUD RATE
)
➢
The baud rate is the rate at which information is transferred in a communication
channel. In the serial port context, "9600 baud" means that the serial port can
transfer a maximum of 9600 bits per second.
➢
The settable baud rates are: 4.8k, 9.6k, 19.2k, 38.4k bps. To set device baud rate
follow the steps given in figure 28.
Figure 28 BAUD (Baud rate)
Figure 27 COMM (Communication Type)
ASCI
RTU
COMM
0
Save
Save
19.2k
4.8k
9.6k
baud
38.4k
0
Save
Save
Save
Save
Summary of Contents for LM Pro 63 Series
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