Access Protection Via Password And Keyswitch - Siemens SINUMERIK 840Di Function Manual

• Reading in part program
Program code (extract)
. . .
PLCDATA = $A_DBW[4];
. . .
Behavior during POWER ON, block search
The DPR communications buffer is initialized during "POWER ON".
During a "block search", the PLC variable outputs are collected and transferred to the DPR
communications buffer with the approach block (analogous to writing of analog and digital
outputs).
Other status transitions have no effect in this respect.
2.2.5

Access protection via password and keyswitch

2.2.5.1 Access protection via password and keyswitch
Access authorization
Access to functions, programs and data is useroriented and controlled via 8 hierarchical
protection levels. These are subdivided into:
• Password levels for Siemens, machine manufacturer and end user
• Keyswitch positions for end user
Multi-level security concept
A multi-level security concept to regulate access rights is available in the form of password
levels and keyswitch settings.
Protection Type
level
0 Password
1 Password
2 Password
3 Password
4 Keyswitch position 3
Various NC/PLC Interface Signals and Functions (A2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Users
Siemens
Machine manufacturer:
Development
Machine manufacturer:
Start-up engineer
End user:
Servicing
End user: Programmer,
machine setter
Comment
// Read a word
Access to (examples)
All functions, programs and data
Defined functions, programs and data;
e.g.,: entering options
Defined functions, programs and data;
e.g.,: Bulk of machine data
Assigned functions, programs and data
Lower than protection level
0 to 3; defined by machine manufacturer or end user
Detailed Description
2.2 Functions
2-31