User's Manual

VT-M2M-BTA-DE
3.5.3 D Sub-9 RS232 Connector
Standard vertical DB-9 male connector
Pin Description
Remarks
1 DCD1/422TX+/485_A
BIOS set
2 RXD1/422TX-/485_B
B
IOS set
3 TXD1/422RX+
BIOS set
4 DTR1/422RX-
BIOS set
5 DGND (ground pin)
6 DSR1
7 RTS1
8 CTS1
9 RI1