Tibbo EM1000 - Page 168

157 Programmable Hardware Manual (PHM)
© Tibbo Technology Inc.
DB-9M connectors
Pin #
RS232 mode
RS422 mode
(IB1002/3 only)
RS485 mode
(IB1002/3 only)
1
---
RTS- (output)
---
2
RX (input)
RX- (input)
RX- (input)
3
TX (output)
TX+ (output)
TX+ (output)
4
DTR (output)
TX- (output)
TX- (output)
5
SYSTEM GROUND
SYSTEM GROUND
SYSTEM GROUND
6
DSR (input)
RX+ (input)
RX+ (input)
7
RTS (output)
RTS+ (output)
---
8
CTS (input)
CTS+ (input)
---
9
---
CTS- (input)
---