Classification
Port
Description
Recommended
wiring
Digital Input
DIx
Digital input
RVV 2*0.5
GND
Dry contact input common
RVV 2*0.5
Digital Output
NO
Digital output normally open
RVV 2*1.0
COM
Digital output common
RVV 2*1.0
NC
Digital output normally close
RVV 2*1.0
Upstream Serial
Port
485+、
485-
RS485+, RS485- (upstream)
RVSP 2*0.5
Power Input
V+、V-
Power supply input positive, power supply input
negative
RVV 2*1.0
PE
Used for reliable grounding of the device, surge
protection
RVV 2*0.5
C2000-A2-SDD4040-AD1 User Manual
9 / 12
SinoCon Co., Ltd.
www.sinoconsys.com
