Siemens 802C CNC system PLC failure - Solutions - Huaqiang Electronic Network

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22

Electronic scale crystal oscillator 3.2*2.5mm 3225 16M (16.000MHZ) 12PF 10PPM 20PPM 30PPM

100V, 250mA, surface mount, high speed switching diode

SMD aluminum electrolytic capacitor

Recently, I used plc802 and wanted to read the PLC program in the milling machine of 802C system into the computer. After the communication was successful, I pressed the upload icon (the download icon did not seem to press), and I didn't see any changes in the computer. Some should have some alarms, such as emergency stop alarm. Later, I chose PLC debugging to start, there are 40006 alarms. Later, I started by storing the data, and there were 4062 alarms. Now I don't know how to restore the original status. Answer: You can follow the steps below to troubleshoot the machine:
1. Re-up and power off the 802C system and observe whether there is an alarm on the operation interface. What is the content?
2. If the machine is normal, there is no alarm, indicating that the machine status is normal. If alarm 4062, the machine data saved in the flash memory has been loaded into the SRAM, try to clear the alarm with the reset button. If the alarm cannot be eliminated, further explanation The PLC data is lost, or if you start with the protection data in the flash memory of the CNC system, but the data save operation (ie internal data protection) is not performed beforehand, please reload the machine data as follows,
3. The debugging switch S3 on the back of the CNC is used to support the startup of the system. Set to 0 to indicate normal startup of the system, set to 1 to indicate NC with standard machine data, set to 2 for system software upgrade, and set to 3 for system use. Backup data boot, set to 4 to indicate that the PLC is stopped.
In order to prevent data loss in the future, it is recommended that the landlord first have to save the internal data as follows: After expanding the menu with the extended key under the Diagnostics/Debug menu, press the data storage hotkey. Then even if the data in the backup memory RAM is lost, do not worry, set the S3 debug switch to 3, and then restart the system, the protection data in the persistent memory FLASH will be automatically loaded into the RAM.
4. If the fault has not been eliminated, indicating that the data save operation (ie internal data protection) has not been performed beforehand, the landlord can request the machine tool data backup from the machine tool manufacturer, connect the PC to the 802C system, and use the PCINOUT software to back up all machine data. Return to the 802C system and test the machine.