Cn2: Usb Connector; Cn3, Cn7: Serial Ports - TMC MI7WBM SERIES User Manual

Chapter 5 Installation

5.3 CN2: USB Connector

CN2 is the standard USB external connector consisting of two ports.
USB support allows connections of up to 64 plug and play external
peripherals per channel. The following table shows the pin outs of these
ports.
Port 1
Port 2

5.4 CN3, CN7: Serial Ports

The onboard serial ports are CN3, a DB-9 connector which is COM1 and
CN7, a 10-pin header connector which is COM2. The following table
shows the pin-out assignments of these connectors.
COM1
Signal Name
DCD, Data carrier detect
RXD, Receive data
TXD, Transmit data
DTR, Data terminal ready
GND, ground
20
Pin # Signal Name
1 Vcc
2 USB-
3 USB+
4 Ground
COM2
Pin # Pin # Signal Name
1 6 DSR, Data set ready
2 7 RTS, Request to send
3 8 CTS, Clear to send
4 9 RI, Ring indicator
5 10 Not Used
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