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MON20/20 Software for Gas Chromatographs User Manual
SEPTEMBER 2010 3-9000-745
7-9
5. Type the desired repeat count, which is the number of times the
Modbus program should read or set the specified registers before
ceasing transmission, in the Repeat field. The Modbus program will
accept a repeat value of 1 to 9999. A value of –1 produces an infinite
polling loop that can be terminated by clicking Stop.
6. Select the Use <data type> to decode registers check box.
7. Select a data type from the pull-down menu. The following table lists
the default data types for each block of SIM_2251 registers.
Note
To ensure the best data type assignments, review a GC Config Report.
8. Click Transmit to retrieve the selected registers (i.e., the specified
data addresses) from the GC. The transmitted/received packet data
displays in the Packet Input-Output window.
9. Click Stop to end the transmission of the data and to return to the
Modbus Function Selection options.
Register Range Default Type
1000 – 2999 Boolean
3000 – 4999 Integer
5000 – 6900 Long
7000 – 8999 Float