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03.04 Operator Components/Sequence of Operations
2.4 Machine control
anel ke
s
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Ó Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Operator's Guide HMI Advanced (BAD) – 03.04 Edition 2-45
2.4.5 Keyswitch
SIEMENS keyswitch
Machine manufacturer
The keyswitch on the SINUMERIK 840D, 810D has 4 settings to
which protection levels 4 to 7 are assigned.
Functions can be assigned to keyswitch positions by the machine
manufacturer. Using machine data it is also possible to set access to
programs, data and functions to suit the user's requirements.
The keyswitch has three different colored keys which can be removed
in the specified positions:
Key positions
Position 0
No key
Protection level 7
Position 1
Key 1 black
Protection level 6
Position 2
Key 1 green
Protection level 5
Position 3
Key 1 red
Protection level 4
Lowest
access authorization
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
½
¯
Highest
access authorization
Changing the access
authorization
The screen is not automatically updated after a change in access
authorization (e.g. when the keyswitch position is changed), but only
when the screen is next refreshed (e.g. on closing and opening a
directory).
The currently valid access authorization is checked every time a
function is executed.
If the PLC is in the stop state, the input image of the machine control
panel is not scanned. For this reason the keyswitch positions are not
evaluated during start-up.
Passwords As an additional option for setting access authorization, it is possible
to enter three passwords in the "Start-Up" operating area.
If the password is set, the keyswitch positions are irrelevant.
/IAD/, Installation and Start-Up Guide 840 D or
/IAC/, Installation and Start-Up Guide 810D
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