CP1L-E Built-in Analog Input Setup
Written by Nicolas Donoso
Updated at March 19th, 2025
Introduction
The CP1L-EL/EM CPU Units are equipped with 2 built-in analog inputs. When a voltage of 0 to 10 V is applied to the built-in analog input terminal, the voltage is converted from analog to digital and the PV in A642 and A643 can be changed to any value within a range of 0 to 1000
Specifications
| Item | Specification |
|---|---|
| Input signal range | Voltage input (0V to 10V) |
| Max. rated input | 15V |
| External input impedance | 100kΩ min. |
| Resolution | 1/1000 (so 0V-10V is scaled 0-1000) |
| Overall accuracy |
at 25°C: ±2.0% otherwise ±3.0% (full scale) |
| Conversion time | Same as the PLC cycle time |
| Isolation method | none |
Analog Input Terminals
Note: PV stands for Present Value, which is the same as the current value based on the Voltage input.
CX-Programmer Example
Above we can see the Symbols that have been setup for scaling the Analog Input. We also have predefined Symbols for storing the scaled value for V1 and V2
Above is the program that will read the Analog Input from the predefined registers (V1: A642 and V2: A643) and output a percentage from 0% to 100%.
Attached below is a copy of the program, note that this program is not supported so use at your own discretion