EVOC EC4-1812CLDNA, Manual, Page: 12 / 68

Chapter 2 Installation
­ 8 ­ EC4­1812CLDNA
USB Interface
USB1, USB2 and USB3 are the 2×5Pin (2.0mm) USB device pins; the transfer cable
is required to connect the interface signals to the standard socket. The table below
shows the pin definitions of the interfaces.
Pin Signal Name Pin Signal Name
1 +5V 2 +5V
3 USB1_Data­ 4 USB2_Data­
5 US 6 US
7 GND 8 GND
USB1/USB2/USB3
9 NA 10 GND_CHASSIS
Serial Port
1) COM1/COM2/COM3/COM4: RS­232
COM1, COM2, COM3 and COM4 are 2×5Pin (2.0mm) COM device pins; the
transfer cable is required to connect the interface signals to the standard socket. The
table below shows the pin definitions of the interfaces.
Pin Signal Name Pin Signal Name
1 DCD# 2 RXD
3 TXD 4 DTR#
5 GND 6 DSR#
7 RTS# 8 CTS#
COM1/COM2/COM3/COM4
9 RI# 10 NA