Siemens S7-1200 System Manual page 261

Action
After ENDIS_PW execution in a
program cycle or startup OB
After change of the operating
mode from RUN or STARTUP
to STOP through STP
instruction, error, or STEP 7
Note
Password protect CPU access levels with strong passwords. Strong passwords are at least
eight characters in length, mix letters, numbers, and special characters, are not words that
can be found in a dictionary, and are not names or identifiers that can be derived from
personal information. Keep the password secret and change it frequently.
Table 7- 103 Condition codes
RET_VAL
(W#16#...)
0000
80D0
80D1
80D2
80D3
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
Operating mode
STARTUP, RUN
STOP
Description
No error
The password for fail-safe is not configured.
The password for read/write access is not configured.
The password for read access is not configured.
The password for HMI access is not configured.
Basic instructions
7.8 Program control operations
ENDIS_PW password control
Active: Passwords are
disallowed according to
ENDIS_PW parameters
Active: Disallowed passwords
remain disallowed
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