Endis_Pw (Enable/Disable Cpu Passwords) Instruction - Siemens S7-1200 System Manual
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- Operating instructions manual (132 pages) ,
- Programming manualline (74 pages) ,
- Manual (46 pages)
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Sample steps for using the RET instruction inside an FC code block:
1. Create a new project and add an FC:
2. Edit the FC:
3. Call the FC from MAIN [OB1].
The EN input on the FC box in the MAIN code block must be true to begin execution of the
FC.
The value specified by the RET instruction in the FC will be present on the ENO output of the
FC box in the MAIN code block following execution of the FC for which power flow to the
RET instruction is true.
7.8.5
ENDIS_PW (Enable/disable CPU passwords) instruction
Table 7- 101 ENDIS_PW instruction
LAD / FBD
Table 7- 102 Data types for the parameters
Parameter and type
REQ
IN
F_PWD
IN
FULL_PWD
IN
R_PWD
IN
HMI_PWD
IN
F_PWD_ON
OUT
FULL_PWD_ON
OUT
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
– Add instructions from the instruction tree.
– Add a RET instruction, including one of the following for the "Return_Value"
parameter:
TRUE, FALSE, or a memory location that specifies the required return value.
– Add more instructions.
SCL
ENDIS_PW(
req:=_bool_in_,
f_pwd:=_bool_in_,
full_pwd:=_bool_in_,
r_pwd:=_bool_in_,
hmi_pwd:=_bool_in_,
f_pwd_on=>_bool_out_,
full_pwd_on=>_bool_out_,
r_pwd_on=>_bool_out_,
hmi_pwd_on=>_bool_out_,
Data type
Description
Bool
Perform function if REQ=1
Bool
Failsafe password: Allow (=1) or disallow (=0)
Bool
Full access password: Allow (=1) or disallow (=0) full access password
Bool
Read access password: Allow (=1) or disallow (=0)
Bool
HMI password: Allow (=1) or disallow (=0)
Bool
Failsafe password status: Allowed (=1) or disallowed (=0)
Bool
Full access password status: Allowed (=1) or disallowed (=0)
7.8 Program control operations
Description
The ENDIS_PW instruction can allow and
disallow client connections to a S7-1200
CPU, even when the client can provide the
correct password.
This instruction does not disallow Web
server passwords.
Basic instructions
259
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