Beckhoff CB3052 Instrukcja Użytkownika Pobierz pdf (Strona 33)

Serial Ports COM2 through COM4 Chapter: Connectors

Beckhoff New Automation Technology CB3052 page 33

3.17 Serial Ports COM2 through COM4

There are three more serial interfaces on the board. Of these, COM3 is available through the power

connector (cf. p. 16). COM2 and COM4 and made available via a 2x5 pin connector each (JST

B10B-PHDSSLFSN, mating connector: PHDR-10VS). However, if the board has a touch screen interface,

COM4 is used internally. On these boards, the COM4 connector is either not populated or it is used for

mouse and keyboard signals (see pinning below). Signals default to RS232 level but can be ordered as

TTL level also.

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

Alternative pinout of COM-connector when touchscreen feature is present:

Description Name Pin Name Description

keyboard clock KCLK 1 6 MCLK mouse clock

keyboard data KDAT 2 7 MDAT mouse data

reserved N/C 3 8 N/C reserved

reserved N/C 4 9 N/C reserved

ground GND 5 10 VCC 5 volt supply

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 77 78

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Beckhoff CB3052 Instrukcja Użytkownika Strona 33