BECKHOFF CB3053 - Manual (Page 32)

Chapter: Connectors Serial Interfaces COM1 and COM2
page 32 Beckhoff New Automation Technology CB3053
4.15 Serial Interfaces COM1 and COM2
The CB3053 offers two serial interfaces COM1 and COM2, which are made available as 2x5pin
connectors (JST B10B-PHDSSLFSN, mating connector: PHDR-10VS). On some board variants COM1 is
being used internally so that these boards only have COM2 externally available. Signals default to
RS232.
The port address and the interrupt are set via the BIOS setup.
Description Name Pin Name Description
data carrier detect DCD 1 6 DSR data set ready
receive data RXD 2 7 RTS request to send
transmit data TXD 3 8 CTS clear to send
data terminal ready DTR 4 9 RI ring indicator
ground GND 5 10 VCC 5 volt supply