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4-12 Input / Output MN1903
4.4.3 Digital inputs - X3
Digital inputs DIN0 to DIN3 can be used as high speed position latches. The fast position
inputs are routed through a programmable cross- point switch which allows any input to cause
the position of any combination of axes to be captured (by the hardware) within 1µs. Special
MintMT keywords (beginning with the letters FAST...) allow specific functions to be performed
as a result of fast position inputs becoming active.
Location
Breakout module, connector X3
Pin Name MintMT keyword / description
1 DIN0 INX.0
2 Common1 Common connection
3 Shield Shield connection
4 DIN1 INX.1
5 Common1 Common connection
6 Shield Shield connection
7 DIN2 INX.2
8 Common1 Common connection
9 Shield Shield connection
10 DIN3 INX.3
11 Common1 Common connection
12 Shield Shield connection
Description
Four fast position digital inputs.
Sampling frequency: 1kHz (MintMT)
Note: Digital inputs DIN0 to DIN3 are particularly sensitive to noise, so inputs must use
shielded twisted pair cable.
Active high:
DINx = 12-24VDC (±20%)
Common1 =0V
Common1
DINx
MintMT
Vcc
NextMove PCI
Active low:
DINx =0V
Common1 = 12-24VDC (±20%)
3k3
TLP115
Figure 4 - Digital input circuit - fast interrupts
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