Modes; Manual Mode; Standard Mode - W&T Rs232 Multi Computer Adapter Handbuch

W&T
RS232 Multi Computer Adapter

Modes

The RS232 Multi Computer Adapter model 85603 offers
four operating modes, which are described in the following.
In all operating modes the LEDs „A" and „B" on the front panel
of the Multi Computer Adapter are used to indicate which data
path is currently active.

Manual mode

The simplest of all operating modes enables manual toggling
of the bi-directional connection between Port A and Port C or
between Port B and Port C.
Pressing the key below LED A opens path Port A <> Port C,
whereas pressing the key below LED B activates the path
Port B <> Port C. After the selector switch is reset the Port A <>
Port C channel is always active. LEDs A and B indicate which
channel is active.
The selector switch uses a handshake signal ir an XIFF
character to automatically block data flow on the non-active
channel.

Standard mode

In this mode switching between both data sources is
automatic on a time basis: the data sender that wants to send
something first uses a handshake stop signal or XOFF charac-
ter generated by the T-switch to automatically block sending
from the other source.
If the first data sender inserts a pause, then the second input is
again ready to receive after a settable switching time. The mul-
ti-computer adapter automatically controls the data flow in this
mode using the handshake procedure set on the respective
port.
Subject to error and alteration 13