15
■
RS-485 Connection
Control data is transmitted and received between the con-
troller and other peripherals. Use a shielded cable of data
communication grade, consisting of two twisted pairs suit-
able for RS485. Cable length may be extended up to 1 200
m (4 000 ft).
●
Internal Diagram
Note:
Make sure to turn the DATA switch on the rear of the
controller to RS-485 position.
T
R
RS485
A
B
A
B
G
GND
5
TB TA RB RA
4
3
2
1
RA
TB
4
3
2
1
TA
RB
