YOKOGAWA UT150L, Руководство пользователя

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IM 05C01E22-10E
2-1
Chapter 2 Communication Specifications
2. Communication Specifications
The RS-485 communication interface has the PC link communication, and the MODBUS communica-
tion.
Table 2-1 UT150L Communication Protocol
Communication Protocol
Specifications
Communication Hardware
Terminal
Maximum Baud Rate
2-wire RS-485 communication system
PC link communication without sum check
PC link communication with sum check
MODBUS communication (ASCII mode)
MODBUS communication (RTU mode)
Terminal numbers: 3-5
9600 bps
Table 2-2 Types of Devices to be Connected
Device to be Connected
PC
Communication Protocol
PC link communication
MODBUS communication
Example of Connected Devices
General-purpose PCs
General-purpose PCs
2.1 RS-485 Communication Specifications
Table 2-3 RS-485 Communication Interface
Communication protocol
Synchronization
Communication system
Maximum communication distance
Standard
Item
Maximum number of devices to be connected
Baud rate
EIA RS-485 compliant
2-wire, half duplex
31
Specifications
2400, 4800, 9600
Asynchronous (start-stop)
1200 m
No-protocol