20
2.4 Interface
2.4.1 Serial Interface
The pin assignment and the shape of plug/socket connector of GP-3300 series are
different from those of GP-4301T/TW.
To know the details about them, see [
4.2 Shapes of COM ports
] and [
4.3 Signals of
COM ports
].
Because of it, the existing PLC connection cables cannot be used as they are.
If you use the existing connection cables, see [
4.5 Cable Diagram at the time of
replacement
].
* For the models except GP-3302B:
When both the COM1 port and the COM2 port have the RS-422/485 setting, only
the COM2 port can be used for RS-422/485 connection after replacement.
Using a USB/RS-422/485 Conversion Adapter (PFXZCBCBCVUSR41) allows you to
use GP4000 series’ USB interface as RS-422/485 serial interface for connection.
For more information, please refer to USB/RS-422/485 Conversion Adapter
Installation Guide.
(
http://www.pro-face.com/otasuke/download/manual/cgi/manual.cgi?mode=33
&cat=3
)
IMPORTANT
When using USB/RS-422/485 Conversion Adapter (PFXZCBCBCVUSR41) with a
display unit, the device/PLCs you can connect to its serial interface
(RS-422/485) are limited. To check the connection configuration, please refer to
GP-Pro EX Device/PLC Connection Manual.
(
http://www.pro-face.com/otasuke/files/manual/gpproex/new/device/index.h
tm
)
If it’s not possible to use USB/RS-422/485 Conversion Adapter
