Fig.3-7 CN2 terminal order
(3) Function of CN 2 terminal shown as T able 3-4
Table 3-4 CN
2 terminal function
Sort
Terminal
Name Function Specification
Commu
nication
485+ RS485
interface
RS485 differential signal
positive terminal
Twisted or shielded wire
needed
485- RS485 differential signal
negative terminal
Digital output
DO1-
CME
Open collector
output
Optical coupling isolation, dual
polarity open
collector output
Note: CME and COM are
internally insulated, but they are
shorted by jumper JP1 on
control board. DO1 is driven by
+24 V by default. If you
want to drive DO1 by external
power supply, remove the JP1
Couple output
Output voltage range:
0–24 V
Output current range: 0–
50 mA
Refer to P4.0 2