Installation
26
RS-485
Connecting the RS-485 terminal
Two wire communication RS-485 is ready to use for sending data to host computer.
The applicable electric wire is of 0.14 mm
2
to 2.5 mm
2
(AWG26 to AWG14).
For the communication output cable, use a twisted shielded pair.
Up to 32 connections can be made including one for the host computer. For the address
settings, refer to “ RS-485 address setting ” (page 47).
The communication cable length is 500 m at maximum.
To terminate the cable, strip 11 mm of the coating from the tip of the cable and connect it
to the terminal.
Connect a terminating resistor (Rt: 120
) to the terminal device of the RS-485
communication line.
RS-485 communication conditions
The RS-485 communication conditions are shown below:
Reference
For details on communications, refer to the separately bound instruction manual for communication
specifications.
RS-485
(communication output)
(
)
(
)
Terminal treatment for cable
11 mm
HU-200TB-W
Rt
Rt
Example of external connection for communication
RS-485
(communication output)
Host computer
converter
Item
Condition
Baud rate
19200 bps
Character length
8 bit
Parity
None
Stop bit
1 bit
