Western Telematic CAS-161A - Manual (Page 5)

1. Introduction
The CAS-161A Code Activated Switch enables a single RS232
Control port to switch between 16 to 64 ports via an ASCII code
sequence.
The code sequence is a user-selectable Prefix code and a Port
Select code. The Prefix code is set via the Setup switch on the
bottom of the unit. For added security, the Setup switch can be
set to require one, two, four or eight of the same Prefix codes.
The Port Select code selects the desired port and allows data to
pass between it and the Control port until the next Prefix/Port
Select code is detected.
The CAS-161A also features a Broadcast mode which enables the
Control port to transmit to all ports.
Optional RS422 line drivers can be factory installed to increase
data transmission up to one mile.
The CAS-161A is field-expandable to 32, 48 or 64 ports by
attaching up to three additional Add-On Modules to the master
unit. CAS-161A applications include:
·
Industrial Robotic and Numeric Control
·
Remote Diagnostics
·
Quality Control for Test Environment
·
Laboratory Equipment Polling
·
Electronic Rotary Switch Selection for Data Gathering
·
Data Acquisition
1-1