Matrix Orbital LK402-25 - Manual (Page 17)

17
RS422 Model
RS422 Header
Figure 15: RS422 Header
Table 14: RS422 Pinout
Pin Function
1 Gnd
2 Rx (Y)
3 Inv Rx (Z)
4 Inv Tx (B)
5 Tx (A)
6 Vcc
The six pin RS422 interface header of the LK402-25-422 offers power and ground connections as well as
two differential pair communication lines. Regular and inverted lines are provided for both receive and
transmit signals. Power is supplied locally to the regular or –V variants while the –VPT can receive
power over a distance. The Tyco 282834-6 style header is most suited to a simple wire connection.
Alternate Power Connector
Figure 16: Alternate Power Connector
Table 15: Alternate Power Pinout
Pin Function
1 NC
2 Gnd
3 Gnd
4 Vcc
The Alternate Power Connector provides the ability to power the LK402-25-422 using a second cable.
This is particularly useful for the regular or -V modules that are to be powered locally. The Tyco 171825-
4 style header will fit a floppy power cable from a PC power supply for a simple bench power solution.