DS551LT7 User Manual 27
RS-232 Output
PIN No.
NAME
01
connected to 7&8
02
RXD
03
TXD
04
connected to 6
05
GND
06
connected to 4
07
connected to 1&8
08
connected to 1&7
09
NC
RS-232 Input
PIN No.
NAME
01
connected to 7&8
02
TXD
03
RXD
04
connected to 6
05
GND
06
connected to 4
07
connected to 1&8
08
connected to 1&7
09
NC