MON20/20 Software for Gas Chromatographs

User Manual

SEPTEMBER 2010

3-9000-745

 

 

3. Type the starting register value in the Data Addr field.

Note

The data type is set automatically by the Modbus program, based on the specified data address.

4.In the Quantity field, type the number of registers to be retrieved. The Modbus program will accept a quantity value of 1 to 2016. The requested number of registers cannot exceed the amount contained by the selected message block but you can retrieve a partial block. You cannot cross a message block boundary.

Also, in Standard Modbus mode each register is 16 bits. Therefore, integers (SHORT) consist of 1 register while floats (FLOAT) and long integers (LONG) consist of 2 registers.

Note

Boolean registers are not user-defined (for either SIM_2251 or User_Modbus) and primarily contain alarm flags useful for debugging. To view the contents of Boolean registers, select the 1 (Read Coil) function code.

Numeric registers for User_Modbus can be user-defined. To view the contents of Numeric registers, select the 3 (Read Regs) function code.

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 –1produces an infinite polling loop that can be terminated by clicking Stop.

6.Depending on your intent, select Use template to decode registers or Use template to decode logs. The Record No field becomes active.

7.Enter the desired record number in the Record No field. To verify which record number should be entered, consult the Modbus specifications for your device. For more information on GC Modbus registers, see Appendix C.

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Emerson Process Management 3-9000-745 manual Type the starting register value in the Data Addr field
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3-9000-745 specifications

Emerson Process Management is a leading provider of automation solutions, offering a range of products designed to streamline operations and enhance productivity in various industrial sectors. One of their notable offerings is the 3-9000-745 model, a versatile and robust device that exemplifies Emerson's commitment to innovation and efficiency.

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