Johnson Controls York YD Manual page 53

The connector on the PC has Male pins, therefore the mating cable needs to terminate in a DB25/F
(Female pin) connector.
Table 13: RS-232 pin assignments - DB9 PC signal set (most laptops)
Pin
Received line Signal Detector (Data Carrier
Pin 1
Detect)
Pin 3 Transmit Data
Pin 5 Signal Ground
Pin 7 Request To Send
Pin 9 Ring Indicator
The connector on the PC has male pins; therefore, the mating cable needs to terminate DB9/F
(female pin) connector.
Figure 5: Communications block diagram
A serial cable to go from the OptiView Control Panel to the serial port is available from the parts
center (P/N 075-90490-230).
Figure 6: OptiView panel to PC serial cable
Table 14: Wiring positions
Signal DB9
TX Position 2
RX Position 3
DSR Position 4
GND Position 5
Model YD Mod D with OptiView Control Center
Description
Color
Black
Red
White
Green
Pin Description
Pin 2 Received Data
Pin 4 Data Terminal Ready
Pin 6 Data Set Ready
Pin 8 Clear To Send
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