Instruction manual

ControlWave Express Instruction Manual (CI-ControlWave Express)
Revised Mar-2011 Installation 2-15
Figure 2-5. Male DB9 9-Pin Connector
Table 2-6. RS-232 COM1 and COM2 Port Connector Pin Assignment
Pin
RS-232
Signal RS-232 Description
1 DCD Data Carrier Detect Input
2 RXD Receive Data Input
3 TXD Transmit Data Output
4 DTR Data Terminal Ready Output
5 GND Power Ground
6 DSR Data Set Ready Input
7 RTS Request to Send Output
8 CTS Clear to Send Input
9 N/A
Use the “null modem” cable for full-duplex (PPP protocol)
communications when connecting a ControlWave Express to a PC. (See
top part of Figure 2-6.)
Table 2-7. RS-232 COM1 (J11) Alternate Connector Pin Assignment
Pin
RS-232
Signal RS-232 Description
1 GND Power ground
2 RXD Receive data input
3 TXD Transmit data output