National Instruments CFP-RLY-421 用户手册

Table 1 lists the terminal assignments for the signals of each 
channel.

All of the COM terminals are connected internally and all of the 
V

SUP

 terminals are connected internally. NI does not recommend 

using them with the cFP-RLY-421.

Cascading power between two modules defeats 

isolation between those modules. Cascading power from 
the network module defeats all isolation between 
modules in the FieldPoint bank.

Table 1.  Terminal Assignments

0

1

2

1

3

4

2

5

6

3

7

8

4

9

10

5

11

12

6

13

14

7

15

16

Table 2.  V

SUP

 and COM Terminal Assignments

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32