AMCI ANS1 ANYNET-I/O, Руководство пользователя

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Additional Functionality
ADVANCED MICRO CONTROLS INC.
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Die Protection Monitors (continued)
Quick Check (continued)
Figure 3.7 shows how the Quick Check operates when the counter is set to self reset.
Figure 3.7 Quick Check - Self-Resetting Count Mode
a) No Fault. The input was low between the falling edge of previous check window and the leading edge of
this check window.
b) No Fault. The input was high for at least 500 microseconds during this check window.
c) A fault occurs because the input was not high for at least 500 microseconds during this check window.
d) The fault count increments because the input goes high between check windows. The counter increments
here because the fault at (c) occurred due to the input’s state prior to the falling edge of the last check win-
dow.
e) The pulse is missing in the check window, but the fault count does not increment because of the fault that
occurred at (d). The fault count will only increment once between the falling edges of consecutive check
windows.
f) The fault count does not increment because
the
input was low for the entire time between
the
falling edge
of previous check window and the leading edge of this check window.
g) The fault count clears and fault output energizes because a fault did not occur between falling edges of
consecutive check windows.
Production Counters
A total of six counters are available on the ANS1.
Part Cycle Counter
This counter tracks the number of part cycles for the running program. This counter increments at the posi-
tion set by the
Production Cycle Increment Position parameter, which has a default of zero. This counter
value is affected by the Production Cycle Multiplier and Production Cycle Divisor parameters. The value of
this counter is:
Machine Revolutions * Production Cycle Multiplier / Production Cycle Divisor
Both the Production Cycle Multiplier and Divisor parameters have default values of one.
The Part Cycle Counter has a Counter Limit Value parameter associated with it. The Counter Limit Value
parameter has a range of 0 to 999,999,999. Any one of the sixteen outputs can also be associated with this
counter as the
Counter Overflow Output . This output can be programmed to turn on when the programmed
count limit is reached, toggle state when the limit is reached, or be enabled when the count equals the pro-
grammed Counter Limit Value.
One Machine
Cycle
Die
Protection
Window
Die
Protection
Input
Fault
Output
Fault
Counter
0
a
0
a
2
d
2
f
0
b
1
c
2
e
0
g