8   Using Expansion Units and Expansion I/O Units
8-2
CP1E CPU Unit Hardware User’s Manual(W479)
8-1 Analog Input Units
Each CP1W-AD041 Analog Input Unit provides four analog inputs. 
• The analog input signal ranges are 0 to 5 V, 1 to 5 V, 0 to 10 V, -10 to +10 V, 0 to 20 mA, and 4 to 
20 mA. The resolution is 1/6,000. The open-circuit detection function is activated in the ranges of 1 to
5 V and 4 to 20 mA. 
• The Analog Input Unit uses four input words and two output words.
z CP1W-AD041
 
(1)Analog Input Terminals
Connected to analog output devices. 
• Input Terminal Arrangement 
Note When using current inputs, voltage input terminals must be short-circuited with current input terminals. 
(2)Expansion I/O Connecting Cable 
Connected to the CPU Unit or Expansion Unit expansion connector. The cable is attached to the
Analog Input Unit and cannot be removed. 
8-1-1 Overview
8-1-2 Part Names and Functions
V IN1 Voltage input 1
I IN1 Current input 1 
COM1 Input common 1 
V IN2 Voltage input 2 
I IN2 Current input 2 
COM2 Input common 2 
V IN3 Voltage input 3 
I IN3 Current input 3 
COM3 Input common 3 
V IN4 Voltage input 4 
I IN4 Current input 4 
COM4 Input common 4 
CH
I IN1 I IN3
I IN2
VIN1
VIN2
VIN3COM1
COM2
I IN4
VIN4
COM4
NC
AG
COM3
IN
(3) Expansion connector
(2) Expansion I/O 
connecting cable
(1) Analog input terminals
CH
I IN1 I IN3
I IN2
VIN1
VIN2
VIN3COM1
COM2
I IN4
VIN4
COM4
NC
AG
COM3
IN
I IN1 I IN3
I IN2
VIN1
VIN2
VIN3COM1
COM2
I IN4
VIN4
COM4
NC
AG
COM3