OMRON PLC Sample Programs
About the Sample Programs
This page provides sample programs and technical documents for OMRON PLCs.
It covers technical information usable in real equipment development, such as the NX/NJ series, CS/CJ series, NA HMIs, OPC UA, Modbus and EtherNet/IP.
It also introduces implementation examples such as ladder programs, structured text (ST), communication programs and database integration.
OMRON NX/NJ series samples
CJ/CS
Memory operations
Shift a string 8 bits toward the upper side
Status check
How to measure how long a bit stays ON
Save data to CF in CSV format
When a flag turns ON, write memory values with date/time data to CF
FBs for various calculations
The NX/NJ series calculation library ported to the CS/CJ series
Archive
Samples made in the past
NA
Tips (WAZA)
Small tips for the NA
IAG
Display bar charts, scatter plots, Gantt charts and Pareto charts
Host applications
CX-Compolet
Connect a PC and a PLC using Compolet and read values
OPC UA
Connect a PC and a PLC using the OPC UA protocol and read values
FINS Message Communication
Connect a PC and a PLC using Compolet and read values
CIP Message Communication
Sends CIP messages from a PC to a PLC connected to an EtherNet/IP port and reads values
Modbus
An explanation of the Modbus protocol from Modicon Inc.
BI tools
Visualize data with BI tools
Visualizing EtherCAT diagnostic and statistical information
Reference
Documents
POUs and tasks
Variables
Constants
Naming rules
Functions and function blocks
Namespaces
ST language
Custom functions/FBs
Libraries
CJ-NJ instruction replacement guide
CJ2M vs CJ3M
NS-V2 vs NS-B