00
248083395-1 Rev 9
C-1
C
MODBUS Real Time
Flow and Laser
Current
This Appendix will provide the user with the procedure to read the
SOLAIR 1100LD counter’s flow and laser current in real time using
MODBUS.
Required
Equipment
and Software
•
PC with an available RS-232C or USB COM port;
•
LWS232 RS485 adapter kit (for use with SOLAIR RS485 Port) or
an
A to B
USB cable (for use on SOLAIR USB Port);
Note:
This procedure
uses RS485 or serial USB
connection only.
•
SOLAIR 1100;
•
MANIFOLD CONTROLLER and MANIFOLD (if the flow is read
through the MANIFOLD CONTROLLER);
•
MODBUS software tool.
Procedure for Computer USB port to SOLAIR only
Note:
Data obtained
from a SOLAIR directly
through MODBUS is real
time and has not been
stored on the SOLAIR.
Data format is “little-
endian” - refer to Appendix
B, MODBUS Register Map
v1.48 for more information.
1. If a PC USB port is to be used, attach an
A to B
USB cable between
the computer and SOLAIR’s USB ports and skip to Step 4.
2. If a PC COM port is to be used, attach the RS232 Male-Female
cable between the computer’s COM port and the RS485 converter.
Attach the RS485 Converter CAT5 data cable to the SOLAIR
RS485 Port.
3. Apply power to the RS485 Converter.
4. Apply power to the SOLAIR 1100.
5. Press START in the MAIN screen of the SOLAIR 1100.
6. Start the MODBUS software tool on the computer system.
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