Mechanical Features And Enclosure; Wiring Assignments - W&T Electronics RS232 Handbuch

W&T

Mechanical features and enclosure

The T-switch comes with three 9-pin RS232 ports and is
integrated into a 45mm wide plastic housing for mounting
on standard rails conformal with DIN EN 50022-35.
Clr Dump
Pwr Err
Port A
Configuring the serial ports and T-switch operating
modes requires opening the housing of the device. For
this purpose it is advantageous to screw a SUB-D plug
with body to one port on the T-switch and use the
attached plug to assist in pulling off the housing cover.

Wiring assignments

The RS232 ports A and B are implemented as SUB-D female
connectors with DCE pin functions, and port C as a SUB-D
male connector with DTE pin functions. This design ensures
that the T-switch can be wired into the majority of
applications with standard 1:1 cables. In addition, this pin
configuration make installation and startup easier, since the
data transfer can be tested first without involving the
T-switch by simply connecting the cables together.
28
RS232 Universal Serial T-Switch
A B
Port C
Port B
1