Vigilant Products

Motion Control Board

ISA-ENCDAC

8 Channel Motion Control PC Interface Card (ISA Bus)

Specifications

Ordering Information

Description
[Product Image]

The ISA-Encoder-DAC is a low cost general purpose I/O resource for applications requiring motion control. The primary functions of quadrature decoder inputs, index pulse inputs, and analog outputs, can be used to implement custom motor or robotics control. The quadrature decoder inputs are typically used to measure linear or shaft rotation position and velocity. The index inputs typically signal a limit position or synchronization location, and the analog outputs set the power setting on a motor. Secondary functions include an interval timer, a watchdog timer, an external trigger input, and 64 digital I/O channel programmable, in four banks of 16, as either inputs or outputs. The interval timer allows preprogrammed CPU wakeup, the watchdog timer provides a security against PC CPU failure and the external trigger allows for an interrupt from an equipment event.

The eight quadrature decoders take a differential input and increment or decrement 16 bit timers with overflow interrupts. Index inputs are also differential and can interrupt on either rising or falling edge. The 8 DACs have 12 bit accurate voltage outputs in either +10V or +5V ranges.

At power up and until programmed by the CPU, the 64 digital I/O channels are tristate, and the DACs are set to zero volts. All interrupts are maskable and power up in the masked state. Registers and commands on the board are accessed via I/O space over the ISA bus. A 64 byte address range is required.

All non-digital I/O signals leave the board through the angle bracket via a 100 pin RFI/EMI shielded, SCSI type connector for easy cable attachment.

The digital I/O are on two 50 pin shrouded headers. An optional cable assembly with angle bracket can bring them out to an adjacent slot.

 Specifications

Analog Outputs:
  Number of channels: 8
 Resolution: 12 bits
 Output voltage ranges: +10V or +5V
 Accuracy: +0.5 lsb, trimpots accessible for gain and offset adjustment
 Temperature drift: +50 ppm/°C
 Converter Setting time: 4us typ.
 Output characteristics: short circuit - 25mA out of op amp, transient protected with EMI inductor.

Quadrature Decoder Counters:
 Number of channels: 8
 Inputs: Diff RS-422A, RS-423-A
 Max encoder tracking freq.: 3.0 MHz
 Counter size: 16 bits with interrupt
 on over flow or underflow. Resettable to zero

Index Capture:
 Number of channels: 8
 Assertion: software configurable for either edge or level.

Encoder and Index Inputs:
  Inputs: Diff RS-422A, RS-423-A
 State: Vid high >0.2V, low <-0.2V
 Input com mode volt: max. +15V
 Input Differential volt: max. +25V
 Input impedance: 220 ohms

Timers:
 1 watchdog with relay SPDT, 1 interval with interrupt
 Resolution: 1us
 Range: 4us to 71 minutes

Digital I/O:
 64 channels in four banks of 16 bit wide with CMOS voltage, +5V fused, and ground available at connector
 lol=64ma, loh = 15ma

External Interrupt:
 Number of channels: 1
 Input: Diff RS-422A, RS-423-A

Programming Interface:
 Registers: encoder counts, DAC values, interrupt mask, interrupt status, digital I/O direction, digital I/O status, various command settings
 Mapping: 16 bit base address setting, 64 bytes sequential

ISA access wait states:
 Register accesses: zero wait states

Interrupts:
 From each encoder overflow or underflow, each index, one external. Each interrupt is maskable. All interrupts tied to one ISA bus IRQ 10, 11, 12, or 15.

ISA Bus:
 16 bit I/O slave accesses

I/O Connector:
 J1: 100 pin, AMP .050 Series Subminiature D (AMPLIMATE) Part No. 749649-9 mounted on angle bracket
 J2, J3: 2 50 pin .100" shrouded headers with optional cable to angle bracket

Dimensions:
 4.5 x 13.275 inches

Power requirements:
 600 mA @ 5V typical (quiescent)
 30 mA @ +12V typ. (quiescent)
 30 mA @ -12V typ. (quiescent)

Environmental:
 Operating Temperature: 0 to 70°C
 Humidity: 5 to 95% non-cond
 Storage Temperature: -20 to +85°C

 I/O Cable Pin Assignment
 Encoder/DAC 100 pin (J1)

1:

Gnd

26:

Chl 4 I+

51:

AGnd

76:

Rel Com

2:

Chl 1 I+

27:

Chl 4 I-

52:

DAC 1

77:

Rel NC

3:

Chl 1 I-

28:

Gnd

53:

AGnd

78:

Rel NO

4:

Gnd

29:

Chl 4 A+

54:

DAC 2

79:

Gnd

5:

Chl 1 A+

30:

Chl 4 A-

55:

AGnd

80:

Gnd

6:

Chl 1 A-

31:

Chl 4 B+

56:

DAC 3

81:

Gnd

7:

Chl 1 B+

32:

Chl 4 B-

57:

AGnd

82:

Chl 7 I+

8:

Chl 1 B-

33:

Gnd

58:

DAC 4

83:

Chl 7 I-

9:

Gnd

34:

Chl 5 I+

59:

AGnd

84:

Gnd

10:

Chl 2 I+

35:

Chl 5 I-

60:

DAC 5

85:

Chl 7 A+

11:

Chl 2 I-

36:

Gnd

61:

AGnd

86:

Chl 7 A-

12:

Gnd

37:

Chl 5 A+

62:

DAC 6

87:

Chl 7 B+

13:

Chl 2 A+

38:

Chl 5 A-

63:

AGnd

88:

Chl 7 B-

14:

Chl 2 A-

39:

Chl 5 B+

64:

DAC 7

89:

Gnd

15:

Chl 2 B+

40:

Chl 5 B-

65:

AGnd

90:

Chl 8 I+

16:

Chl 2 B-

41:

Gnd

66:

DAC 8

91:

Chl 8 I-

17:

Gnd

42:

Chl 6 I+

67:

AGnd

92:

Gnd

18:

Chl 3 I+

43:

Chl 6 I-

68:

No Conn

93:

Chl 8 A+

19:

Chl 3 I-

44:

Gnd

69:

User Rst

94:

Chl 8 A-

20:

Gnd

45:

Chl 6 A+

70:

Gnd

95:

Chl 8 B+

21:

Chl 3 A+

46:

Chl 6 A-

71:

Gnd

96:

Chl 8 B-

22:

Chl 3 A-

47:

Chl 6 B+

72:

Gnd

97:

Gnd

23:

Chl 3 B+

48:

Chl 6 B-

73:

Gnd

98:

Ext Trig+

24:

Chl 3 B-

49:

Gnd

74:

Gnd

99:

Ext Trig-

25:

Gnd

50:

Gnd

75:

Gnd

100:

Gnd

 Digital I/O 2 x 50 pin (J2 and J3)

1:

+5V fused

26:

+5V fused

2:

+5V fused

27:

I/O 16

3:

I/O 0

28:

I/O 17

4:

I/O 1

29:

I/O 18

5:

I/O 2

30:

I/O 19

6:

I/O 3

31:

I/O 20

7:

I/O 4

32:

I/O 21

8:

I/O 5

33:

I/O 22

9:

I/O 6

34:

I/O 23

10:

I/O 7

35:

Gnd

11:

Gnd

36:

Gnd

12:

Gnd

37:

+5V fused

13:

+5V fused

38:

+5V fused

14:

+5V fused

39:

I/O 24

15:

I/O 8

40:

I/O 25

16:

I/O 9

41:

I/O 26

17:

I/O 10

42:

I/O 27

18:

I/O 11

43:

I/O 28

19:

I/O 12

44:

I/O 29

20:

I/O 13

45:

I/O 30

21:

I/O 14

46:

I/O 31

22:

I/O 15

47:

Gnd

23:

Gnd

48:

Gnd

24:

Gnd

49:

Gnd

25:

+5V fused

50:

Gnd

1:

+5V fused

26:

+5V fused

2:

+5V fused

27:

I/O 48

3:

I/O 32

28:

I/O 49

4:

I/O 33

29:

I/O 50

5:

I/O 34

30:

I/O 51

6:

I/O 35

31:

I/O 52

7:

I/O 36

32:

I/O 53

8:

I/O 37

33:

I/O 54

9:

I/O 38

34:

I/O 55

10:

I/O 39

35:

Gnd

11:

Gnd

36:

Gnd

12:

Gnd

37:

+5V fused

13:

+5V fused

38:

+5V fused

14:

+5V fused

39:

I/O 56

15:

I/O 40

40:

I/O 57

16:

I/O 41

41:

I/O 58

17:

I/O 42

42:

I/O 59

18:

I/O 43

43:

I/O 60

19:

I/O 44

44:

I/O 61

20:

I/O 45

45:

I/O 62

21:

I/O 46

46:

I/O 63

22:

I/O 47

47:

Gnd

23:

Gnd

48:

Gnd

24:

Gnd

49:

Gnd

25:

+5V fused

50:

Gnd

 Ordering Information:

ISA-ENCDAC-4D64 - ISA Bus 4 chl Encoder/4 chl DAC with 64 digital I/O channels
ISA-ENCDAC-8D64 - ISA Bus 8 chl Encoder/8 chl DAC with 64 digital I/O channels
ISA-DIGCABLE - Digital I/O cable extender to 100 pin angle bracket connector
ASMBLY-DIG1 - 36" 100 pin round cable to 64 Channel RELAY TERMBD (included)
ASMBLY-ENC1 - 60" 100 pin cable to two 50-screw terminal block panels (included)

 

 If you would like more information on this or any other product, please fill out our information inquiry form.

Copyright © 1998 Vigilant Technologies, Inc.
 Last modified: June 21, 2002
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