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V. TECHNICAL INFORMATION
A.
INTERFACES
1.
SERIAL INTERFACE
a.RS232
The standard serial interface applicable to PP4000S is
RS232. The communication protocols in RS232 are: 19200 bps,
none parity, 8 data bits, 1 stop bit. These settings are fixed, not for
change. The RS232 connection is done through a 9 pin D sub
female connector with following pin assignments:
Pin #
Definition
Pin #
Definition
Pin #
Definition
1
N.C.
4
DTR
7
N.C.
2
TXD
5
GND
8
CTS
3
RXD
6
DSR
9
N.C.
b.RS422
RS422 is the serial interface applicable to PP4000B. Similar
to RS232, the communication protocols in RS422 are: 19200 bps,
none parity, 8 data bits, 1 stop bit. These settings are also fixed
and not for change. The RS422 connection uses the same 9 pin D
sub female connector used in RS232 with following pin
assignments:
Pin #
Definition
Pin #
Definition
Pin #
Definition
1
RD+
4
CS-
7
SD-
2
RD-
5
GND
8
RS+
3
CS+
6
SD+
9
RS-