Phase 1 of firmware restoration is described in our previous blog post on the 140CPU43412A firmware.
140CPU43412A Firmware Part II
Restoring a 140CPU43412U (Unity) to 140CPU43412A (Concept):
During the download:
• Do not power OFF the PLC
• Do not power OFF the PC
• Do not disconnect the cable
• Do not shut down OS loader
Any loss of communication during the update procedure can cause severe damage to the CPU or NOE module. Failure to follow these instructions can result in injury or equipment damage.
Reset the PLC
Once the download of the intermediate binary file has completed, the PLC has to be initialized. This task can be performed by one of the two following actions: Reset the PLC by pushing on the Restart button located on the CPU (for more information, refer to the PLC technical documentation). Power OFF then ON the PLC. Once the PLC has restarted, go to Phase 3: download the final Concept OS.
The final binary file “q5rv135E.bin ” (140CPU34312 in our example) has to be downloaded. For that, follow the same procedure as the one described in the Phase 1.
Checking Version (optional)
If needed, you can check the new CPU version. For that Open the OS loader tool. Select the communication protocol. Click on “Connect.” Then Click on “Properties.”