CJStat: OMRON CJ Series PLC Status Monitoring Tool

Overview

CJStat is a Windows monitoring tool that reads the status of OMRON CJ series PLCs via FINS communication.

• CPU information
• PLC operating status
• Error history
• Unit configuration
• Power-on time

Tested on: Win11

How to Use

IP address

Source: select the IP address of the PC connected to the PLC
Destination: set the IP address of the PLC to connect to

* When you change an IP address, a message asks whether to generate the FINS address automatically

FINS address

Source: set the FINS address of the PC
Destination: set the FINS address of the PLC

Displayed items

	Model	CPU unit model
	Version	Internal system version
	DipSwitch	DIP switch information
	Maximum number of EM banks
	Program area size
	IOM size
	Number of DM words
	Timer size	Timer/counter size
	EM size
	Memory card type	00: none 04: flash memory
	Number of remote I/O	Number of mounted SYSBUS I/O units
	Number of racks	Number of connected racks
	Program change date/time	Date/time the user program was changed
	Parameter change date/time	Date/time the parameter area was changed
	UM read	UM read protection
	Task read	Task read protection status
	PG overwrite when protected	Status of the program overwrite prohibit setting when read protection is set
	Backup to CF	Status of permission to back up the program to a memory card when read protection is set
	IR, DR inter-task status	Inter-task operating status of IR and DR
	Power ON time
	Power interruption time
	Number of power interruptions
	Operation start time
	Operation stop time
	Power-on time (×10 h)
	CPU Bus Unit No. ?	Model of the connected CPU Bus Unit
	...
	Special I/O Unit No. ?	Model of the connected Special I/O Unit
	...

PLC status

MONITOR	Operating mode PROGRAM / MONITOR / RUN
BUSY	Accessing flash memory
BATTERY	Battery present
STANBY	CPU on standby
PLC time
FALS to memory error	Fatal error
Other non-fatal errors to system error (FAL)	Non-fatal error
Error code	The most severe of the errors

Error history

FAQ

Is CJStat free?

Yes, it is free to use.

Which PLCs are supported?

OMRON CJ series CPUs are supported.

What communication method does it use?

It uses FINS communication.

Can it retrieve the error history?

Yes, it can.

Download

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CJStat.zip

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