red lion GEMINI 1000, Instruction Manual

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PROCESS MONITORING SYSTEM
Five Gemini 2000s with 20 mA Current Loop Option, are
used to monitor and control parts packaging machines in a
plant. The units are located at each of the machines in the
production area of the building. The communications lines are
run to an Industrial computer located in the production offices.
[OTHER GEMINIS OR RLC PRODUCTS WITH 20 MA CURRENT LOOP
CAN BE CONNECTED IN THE SAME LOOP.]
The drawing below shows the Current Loop set-up. Each
Gemini 2000 is given an address and the Serial DIP switches are
set accordingly. A Baud Rate of 1200 is selected and set in each
of the Gemini 2000s. An application program is written, which
sends and retrieves data from the units using the Change and
Transmit Value commands.
Note: A Serial Converter Module is
available for interfacing an RS232
device to Geminis.