‑35‑
Description Terminals on the left Terminals on the
right
Description
RS485 differential
pair (+)
485+ +24V 24 VDC power supply
(+)
RS485 differential
pair (‑)
485‑ 0V 24 VDC power supply
(‑)
Communication
grounding terminal
of RS485
GND
PE
● Communication specifications
Item Description
Number of channels supported Three channels at most (one built‑in and
two extended in the extension card,
including RS232)
Hardware interface 2 x 3‑pin terminal (shared with the power
supply)
Isolation mode Non‑isolated
Termination resistor Without termination resistor, can be master
or slave
Number of slaves connected Up to 31 slaves (The length of each slave
branch must be shorter than 3 m.)
Communication baud rate 9600 bit/s, 19200 bit/s, 38400 bit/s, 57600
bit/s, and 115200 bit/s
Short circuit protection Providing protection against improper
connection of 24 V power supply
● Wiring
See "
4.2 Cable Selection
"
on page 33
when selecting the communication cable,
Insert the communication cable into the communication port.
■ Ethernet communication
To improve communication reliability, use Cat 5e cables with injection molded and
iron shell as Ethernet cables.
● Connection: Insert the registered jack on the cable into the Ethernet port (RJ45
interface) until hearing a clicking sound.
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