Connector Pinouts
Model P5000HX Series CPU User’s Manual
59
FIGURE 22
Pin orientation - Serial Ports 1 and 2
Pin No.
Description
1
/Z Output (TX-)
2
/B Receive (RX-)
3
Y Output (TX+)
4
Not Connected
5
Ground
6
A Receive (RX+)
7
Not Connected
8
Not Connected
9
Not Connected
10
+5V
RS-422/485 Pinout
Serial Port 2 (UART 2)
Note: The Pin numbers above are appropriate for con-
necting two Texas Micro CPU cards through the 10-pin
headers only.
Pin No.
Description
1
/Z Output (TX-)
3
Y Output (TX+)
2
/B Receive (RX-)
6
A Receive(RX+)
Pin No.
Description
2
/B Receive (RX-)
6
A Receive (RX+)
1
/Z Output (TX-)
3
Y Output (TX+)
Machine A
Machine B
T
o connect two RS-485 devices, use a shielded
twisted-pair cable no longer than 4000 ft.,
configured as follows:
