Baldor MN1903 installation manual Digital input circuit fast interrupts

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.

12	Location	Breakout module, connector X3
	Pin	Name	MintMT keyword / description
	1	DIN0	INX.0
	2	Common1	Common connection
	3	Shield	Shield connection
1
	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.

NextMove PCI

3k3

DINx

Common1

Active high:

DINx = 12-24VDC (±20%)

Common1 = 0V

Vcc

MintMT

TLP115

Active low: DINx = 0V

Common1 = 12-24VDC (±20%)

Figure 4 - Digital input circuit - fast interrupts

4-12 Input / Output MN1903