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S7-1200 Cables / Memory Cards / Accessories -- Setting up and parameterizing hardware -- Initializing and parameterizing modules
How can you delete the IP address and reset your S7-1200 to factory settings using the SIMATIC MC memory card (2MB or 24MB)?
S7-1200 CPU 12xx -- Setting up and parameterizing hardware -- Initializing and parameterizing modules
Which settings do you have to make in the TIA Portal to read out messages and status information over the CPU's web server and display them in the web browser?
What is the meaning of the system constants in STEP 7 (TIA Portal) with S7-1200/1500?
How can the CPU analog inputs of the SIMATIC S7-1200 also measure currents of 0-20mA?
How do you program the "GET" and "PUT" instructions in the user program of the SIMATIC S7-1200 CPU in order to transfer more than 160 bytes of data?
Why must you never remove a memory card when the S7-300/S7-400/S7-1200/S7-1500 CPU is in operation (RUN)?
How does startup work in an S7-1200?
What is the connection between subnet masks and IP addresses with regard to subnetting and supernetting (Classless Inter Domain Routing CIDR)?
How can you prevent data loss of runtime-generated parameters when updating your S7-1200 PLC program?
How can you share runtime-generated parameters between several S7-1200 PLCs with a KTP Basic Panel?
How can you change the IP address of an S7-1200 without using STEP 7 Basic?
How can you delete the IP address and reset your S7-1200 to factory settings using the SIMATIC MC memory card (2MB or 24MB)?
How can you download to a network of several S7-1200 PLCs with the same IP address?
How can you reset the IP address of your S7-1200 PLC using STEP 7 Basic software?
How can you delete the IP address and reset your S7-1200 to factory settings using the SIMATIC MC memory card (2MB or 24MB)?
Part number:

Description
Even without the STEP 7 Basic software and without knowing the IP address you can delete the IP address and reset your S7-1200 up to and including firmware V2.1.2 to the factory settings using the SIMATIC MC memory card.

Disable write protection
Make sure that the memory card is not write-protected. For this you move the protection switch out of the lock position.


Fig. 01

Using an empty memory card
There are two ways of obtaining an empty memory card.

  • Use a new empty SIMATIC MC memory card from Siemens.
  • If your SIMATIC MC memory card is not empty, delete the "SIMATIC.S7S" folder and the "S7_JOB.S7S" file on the memory card, using Windows Explorer, for example.

Deleting the IP address
Proceed as below to delete the IP address and reset the S7-1200 up to and including firmware V2.1.2 to the factory settings.

  1. Slot an empty memory card in the S7-1200.
  2. Switch S7-1200 off and on again.

This reboots the S7-1200. After restarting and re-evaluation of the SIMATIC MC memory card the load memory, this means the device configuration including the IP address, the user program and all the force values are copied to the memory card. The memory card turns into a program card containing the data and the IP address stored previously in the internal load memory. When the copying procedure has been completed, the internal load memory of the S7-1200 is deleted. The S7-1200 now switches into the configured operating mode for startup (RUN or STOP). 
When the procedure has been completed, the service LED of the S7-1200 flashes to indicate that you can remove the memory card.

  1. Remove the memory card from the S7-1200.
  2. Switch the S7-1200 off and on again.

The internal load memory including the IP address is now deleted and the S7-1200 up to and including firmware V2.1.2 has been reset to the factory settings.


Fig. 02

Note
As from firmware V2.2.0 you delete the internal load memory of the CPU by slotting an empty transfer card. However, the IP address is retained.

Additional information
More information is available in the system manual under "Using Memory Cards" in Entry ID: 36932465.
The firmware versions of the S7-1200 CPU are here.

 Entry ID:40588092   Date:2012-09-03 
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