Notes
SINUMERIK 802D sl Operating and Service Training Manual Page 6
C8
C8
3.2 Pushbutton testing examples based on MCP diagram on previous
page:
A) NC START Pushbutton.
NC START = mnemonic #27
#27 = X1202 / X222 Pin 5 24V m = 0 I 3.2
B) NC STOP Pushbutton
NC STOP = mnemonic #26 Pin 4 24V m = 0 I 3.1
Due to the update time of the HMI software you should press the key for a longer
duration for the test.
Customer LED testing examples based on MCP diagram on previous
page:
The standard 802D sl machine control panel has 6 customer LED's which
are used to acknowledge the function which is activated by the corre-
sponding key press.
The LED's are controlled by the machine tool builder’s PLC program. After
pressing the corresponding key and the lamp does not come on, this does
not necessarily mean that the lamp is defect. In such a case it can mean
that the function which has been activated by the key cannot be acknowl-
edged.
Example: Force lubrication, with no oil in lubrication tank.
Often in such cases a lamp test can be performed with a combination of
key presses. Please see the machine tool builder’s documentation of how
in this case to perform the lamp test.
The signals can be then tested using the PLC status display “See hand
book module C32”
After performing a pushbutton test, it may be found that all pushbuttons are defect
and not just one key or lamp.
In the case where all keys and lamps are not working the MCPA board should be
tested, or the periphery board for MCP to periphery.
See hand book module C11 for MCPA diagnostic
See hand book module C32 for periphery testing
Hardware interface—MCP pushbutton test with periphery version
Section 3
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