Figure 6: SA/FC Bus communication with serial port adapter on the display
Table 2: Serial port position to SA/FC Bus connection
Serial port position
SA Bus connection
FC Bus connection
1
2
2
2
2
2
3
1
1
4
1
1
5
NA
NA
6
3
3
7
NA
NA
8 (shield)
NA
4
Advanced Graphic Touchscreen Display on 25 Ton to 80 Ton Johnson Controls Premier Rooftop Units
10
Johnson Controls
