Intelligent Motion Systems MDrive34Plus manual Logic Level Shifting and Conditioning Circuit

Models: MDrive34Plus

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Logic Level Shifting and Conditioning Circuit

Logic Level Shifting and Conditioning Circuit

The following circuit diagram is of a Logic Level shifting and conditioning circuit. This circuit should be used if you are making your own parameter cable and are using a laptop computer with 3.3 V output parallel ports.

 

R1

 

 

 

 

 

 

 

1

 

 

R2

 

 

 

2

 

 

 

 

 

 

2

U1:A

3

 

 

8

CLK

100 330pF

 

 

 

 

 

 

 

 

 

DB25: 2

C3

 

100K

 

 

 

14

HCT125

49.9

 

 

P2: 8

3

 

 

 

R9

+5V

 

 

 

+5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DB25: 3

 

 

 

 

R10

100K

 

4

 

 

 

 

 

 

 

 

 

 

R3

 

 

 

 

R4

 

 

 

4

 

 

 

5

 

6

 

 

4

 

 

 

 

 

 

 

U1:B

 

 

CS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 C4

 

 

 

 

 

 

 

DB25: 4

 

 

330pF

 

 

7

HCT125

49.9

 

 

P2: 4

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DB25: 19

R5

 

 

 

 

 

 

 

13

 

R6

 

 

 

 

 

 

 

 

 

 

12

U1:D

11

 

 

7

MOSI

 

100

 

 

 

 

 

 

 

49.9

 

 

330pF

C5

 

100K

 

HCT125

 

 

 

P2: 7

 

 

R11

+5V

 

+5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R7

R8

4.9K

 

10

R12

100K

 

 

 

15

 

 

 

 

U1:C 9

 

10

 

 

 

 

 

 

8

 

 

 

 

MISO

 

 

 

 

 

49.9

 

 

 

 

 

DB25: 15

 

 

 

 

 

HCT125

 

+5V

 

 

 

P2: 10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

+5 VDC

 

 

 

 

 

 

 

 

 

 

 

 

 

C2 +

1µF

 

 

 

 

 

 

 

 

 

 

 

C1

 

.1µF

5

P2: 6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25V

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P2: 5

Figure 2.4.2: Logic Level Shifting and Conditioning Circuit

NOTE: If making your own parameter setup cable, be advised the 3.3V output parallel ports on some

laptop PC’s may not be sufficient to communicate with the device without use of a logic level shifting and conditioning Interface.

Part 2: Interfacing and Configuring

2-23

Page 51
Image 51
Intelligent Motion Systems MDrive34Plus Logic Level Shifting and Conditioning Circuit, Part 2 Interfacing and Configuring