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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-
