Contact Siemens Support / Authorized Service
Visit Siemens Industry Online Support. Search for your CPU’s exact order number and download the “Firmware Update for S7-1500 CPU” (file extension .upd ). Do not confuse this with HSP (Hardware Support Package). siemens s7-1500 password reset
Searching forums for “Siemens S7-1500 password reset hack” yields many false leads. Here is the truth: Contact Siemens Support / Authorized Service Visit Siemens
. Because these PLCs do not have a default "backdoor" password for security reasons, forgetting the password usually requires wiping the CPU's configuration. 1. Reset via TIA Portal (Online Connection) siemens s7-1500 password reset