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7.8.3 M, S, T FUNCTION TRANSFER USING THE M-DONE SIGNAL
When parameter P605(5) is set to “0”, the CNC maintains the BCD outputs and the
corresponding Strobe signal (M, S, T) active for 100 milliseconds.
When the electrical cabinet has a device requiring the BCD signals to be active for
a longer time, machine parameter P605(5) must be set to “1”.
In each case, the CNC acts as follows:
“P605(5)=0”
1.- The CNC transfers the BCD value of the selected function via pins 20 thru 27 of
connector I/O 1.
50 milliseconds later, the “M Strobe” output is activated to “tell” the electrical
cabinet to execute the M function.
2.- When the electrical cabinet detects the activation of the “M Strobe” signal, it
must start the execution of the corresponding function.
3.- The CNC will maintain the “M Strobe” signal for 100 milliseconds and the BCD
signals for another 50 milliseconds.
After this time period, it will wait for the M-DONE signal provided by the electrical
cabinet indicating to the CNC that the execution of the “M” function is completed.
If the M-done signal was not deactivated in point 2, the CNC will consider the
M transfer completed after the BCD signals disappear (there is no wait).
Atention:
When executing an M function which has been set at the decoded-M
table, the CNC analyzes the status of bit 17 of the bottom row.
If "0", it behaves as described above; but if "1", it behaves as described
next [P605(5)=1]
Chapter: 7
Section:
Page
CONCEPTS
"M, S, T" FUNCTIONS
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