Siemens s7-300plc how to reset and format - Database & Sql Blog Articles

LED light-emitting diode

1: Switch the operating mode switch from the STOP position to the MRES position for at least 3 seconds until the red "STOP" LED begins to flash slowly. Release the switch and turn the switch to the MRES position again for up to 3 seconds. When the "STOP" LED flashes, the CPU has been reset. If the "STOP" LED does not start flashing, repeat this procedure.
How to reset the memory: Switch the operation mode switch from the STOP position to the MRES position. The STOP LED goes off for 1 s, lights up for 1 s, and remains lit after 1 s. Release the switch and bring it back
In the STOP position, the switch is returned to MRES within 3 seconds. The STOP LED flashes at least 3s at 2Hz, indicating that it is resetting. Finally, the STOP LED is always on, and the mode switch can be loosened and completed.
Step reset CPU memory
1. Turn the key to the STOP position.
2. Turn the key to the MRES position and hold it until the STOP LED lights up for the second time and remains lit (3 seconds required). Now release the key.
3. The key must be turned to the MRES position again within 3 seconds and held still until the STOP LED flashes (frequency is 2 Hz). The switch can now be released. After the CPU completes the memory reset, the STOP LED will stop flashing and remain lit. The CPU has completed resetting the memory.

Use the following steps to format MMC
If the CPU requests a memory reset (the STOP LED flashes slowly), you can format the MMC by setting the selector switch as follows:
1. Switch the switch to the MRES position and keep it still until the STOP LED lights up and remains lit (after about 9 seconds).
2. Within the next three seconds, release the switch and switch it to the MRES position again. The STOP LED flashes to indicate that formatting is in progress.

Copper Connecting Terminals

Our company specializes in the production and sales of all kinds of terminals, copper terminals, nose wire ears, cold pressed terminals, copper joints, but also according to customer requirements for customization and production, our raw materials are produced and sold by ourselves, we have their own raw materials processing plant, high purity T2 copper, quality and quantity, come to me to order it!

Copper Connecting Terminals,Cable Lugs Insulated Cord End Terminals,Pvc Insulated Cord End Terminal,Cable Connector Insulated Cord End Terminal

Taixing Longyi Terminals Co.,Ltd. , https://www.longyicopperlugs.com