4-8 Input / Output MN1941WEN
4.3.1.3 DIN0 - DIN3
Digital inputs DIN0 to DIN3 can be assigned as fast interrupts. These are used as high speed
position latches, allowing any combination of axes to be captured by the hardware. The
latency between input triggering and capture is 1 µs. Special Mint keywords (beginning with
the letters LATCH...) allow specific functions to be performed as a result of fast position inputs
becoming active. See the Mint help file for details.
Figure 8: Fast interrupt digital input - DIN3 shown
Digital inputs DIN0 to DIN3 use CREF0 as their common connection.
Note: The fast inputs are particularly sensitive to noise, so inputs must use shielded
twisted pair cable. Do not connect mechanical switches, relay contacts or other
sources liable to signal ‘bounce’ directly to the fast inputs. This could cause
unwanted multiple triggering.
6k2
TLP115A
100R
1
3
2
‘X10’
NextMove e100
DGND
Mint
Vcc
DIN3
Shield
CREF0
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