		Topic: CL066
PLC Error Code List

The table provided below includes a list of the CLICK PLC Errors along with causes, solutions, and other reference information. When an Error or a Warning occurs, the Error Code is stored in the system data register SD1.

Error Code	SC Bit*	Error Name	Category	Causes	Solutions
0101	SC20	I/O Module Error	Error	There are more than 8 I/O modules.	A CLICK PLC system can support up to 8 I/O modules. Remove any excessive I/O modules.
				At least one I/O module was added to the CLICK PLC during operation.	Power off the CLICK PLC and check the connection of the I/O modules. Then power on the CLICK PLC again. If the problem remains, connect the CLICK software to the PLC and check the System Configuration. If there is any I/O module that is not shown in the System Configuration, replace it.
				An I/O module has failed.	Connect the CLICK software to the CLICK PLC and check the system configuration. If there is any I/O module that is used in the PLC system but not shown in the System Configuration window, replace the I/O module.
0102	SC21	System Config Error	Error	The current system configuration does not match the configuration saved in the project file.	Connect the CLICK software to the CLICK PLC and open the System Configuration window. Modify the current configuration of the CLICK PLC to match the configuration in the project file, or uncheck the ‘Start-up I/O Config Check’ option if you want to use the current configuration.
0103	SC22	I/O Config Error	Error	At least one I/O module was removed from the CLICK PLC during operation.	Power off the CLICK PLC and check the connection of the I/O modules. Then power on the CLICK PLC again. If the problem remains, connect the CLICK software to the PLC and check the System Configuration. If there is any I/O module that is not shown in the System Configuration, replace it.
0103	SC22	I/O Config Error	Error	The CPU module can not access one or more I/O modules.	Connect the CLICK software to the CLICK PLC and open the System Configuration window. If there is any I/O module that is used in the PLC system but not shown in the System Configuration window, replace the I/O module.
0104	SC23	Memory Check Error	Error	There is a memory check error.	Power cycle the CLICK PLC. If the same error occurs again, download the project again and/or try the ‘Reset to Factory Default’ command. If the same error still occurs, replace the CPU module.
0105	SC24	Project File Error	Error	There is no project file in the CLICK PLC.	Download a project file into the CLICK PLC.
0105	SC24	Project File Error	Error	The project file stored in the CLICK PLC is corrupted.	Download the project file into the CLICK PLC again.

Error Code	SC Bit*	Error Name	Category	Causes	Solutions
0106	SC25	Firmware Version Error	Error	The project file was written on a newer version of CLICK software. The firmware in the CLICK PLC is too old to execute the project.	Connect the CLICK software to the CLICK PLC and update the firmware of the CPU module.
0107	SC26	Watchdog Timer Error	Error	The PLC scan time exceeded the watchdog timer setup.	Connect the CLICK software to the PLC and check the maximum PLC scan time and the watchdog timer setup.
0201	SC27	Lost SRAM Data	Warning	The data in the SRAM was lost while the CLICK PLC was powered off.	The CLICK CPU module does not have a battery back-up, but it has a capacitor that will hold memory for a few days. The data in the SRAM is lost if the CLICK PLC is powered off for long enough for the capacitor to discharge. In this case, the CLICK PLC initializes the data in the SRAM automatically.
0202	SC28	Battery Low Voltage	Warning	Battery voltage is too low to retain data in the SRAM.	Replace the battery (ADC part #: D2-BAT-1). Also, set the new battery installation date and the anticipated replacement date in the CLICK programming software if the Battery Replacement Notification option is selected. (Pull-down menu: Setup > Battery Backup Setup)
0203	SC29	Battery Replacement	Warning	The anticipated battery replacement date has passed.	Replace the battery (ADC part #: D2-BAT-1). Also, set the new battery installation date and the anticipated replacement date in the CLICK programming software. (Pull-down menu: Setup > Battery Backup Setup)

	Note: * The SC bits are turned ON when the related Errors occur.

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PLC Error Code List

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