DB25 pin 

(PC PIN) 

The pin of the interface board

Comment(signal)

1

Step 5

Fifth axis pulse

2

Step X

X pulse

3

DIR X

X axis direction

4

STEPY

Y pulse

5

DIR Y

Y axis direction

6

Step Z

Z axis pulse

7

DIR Z

Z axis direction

8

Step 4

Fourth axis pulse

9

DIR 4

Fourth axis direction

10

Limit-1

Limit input interface 1

11

Limit-2

Limit input interface 2

12

Limit-3

Limit input interface 3

13

Limit-4

Limit input interface 4

14

DIR 5

Fifth axis direction

15

Vacant

16

RLY

Relay control

17

EN

All axis enable

18-25

GND

GND