Parker Hannifin 
Enable Circuit Schematic 
 
Figure 17 Equivalent Circuit for Motion Enable Connector 
COM1 Connector 
The COM 1 port on the ACR90x0 controller supports the following 
transmission characteristics: 
•  1200, 2400, 4800, 9600, 19200, 38400 baud (The controller 
automatically detects baud upon start-up.)  
•  8 data bits 
•  1 stop bit 
• No parity 
•  Xon/Xoff flow control 
 
The controller supports RS-232 full-duplex and RS-485 full-duplex operation. 
Hardware configuration determines the mode of data transmission. (For 
information on configuring the hardware, see COM1 Connection on page 72.) 
The controller does not support half-duplex operation. 
COM1 Connector Specification 
Manufacturer...........................................KYCON or equivalent 
(www.kycon.com
) 
Connector Type.......................................9-pin D-sub, 2-row  
(male connector) 
Manufacturer Part Number ..................... K202HT-E9P-NJ 
54   ACR9000 Series Hardware Installation Guide 
www.comoso.com