12
W&T
RS232(/RS422/RS485) Multi Computer Adapter
Display and control elements
The device uses four LEDs, a green „Power“ for indicating
correct supply voltage and the LEDs marked „A“ and „B“ to indi-
cate which input channel is active.
The LED marked „Error“ indicates the presence of parity or
framing errors in running data traffic and can only be
cleared explicitly by pressing the „Clear“ key. The „Clear“ key
resets the T-switch and deletes all internal data and error
memories.
Pressing the „Dump“ key when the device is turned on
outputs the current setting of the T-switch on whichever
serial port has been selected using the DIL switches.
Additional information about this function can be found in the
section Diagnostic functions > Setting-dump.
Configuring the serial ports
All three ports on the T-switch can be configured for
transmission rate, data format and handshake procedure com-
pletely independently of each other. This feature allows you to
connect the T-switch to terminal devices which use different
serial data formats.
The modular construction of the T-switch allows you to
incorporate other interface modules to convert the interface
type within the device. Especially when larger quantities are
involved changing over the T-switch with other interface
modules represents an economical alternative to the
external converters otherwise commonly used. Please contact
us with any requirements for special versions of the T-switch.
You set the serial parameters using three DIL switch banks
SW1..SW3 inside the device. The position and arrangement of
the DIL switch banks with respect to the corresponding port can
be seen in the following sketch.
