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7-9-4 Creating a Project File
·The following description provides information about how to create a project file to
issue the RUN command and frequency reference and read the Inverter status.
H Design
·Select from I/O items, monitor items, and parameters the data to be exchanged
according to the application. Then consider what sequence is required by using the
protocol macro function.
Example: Writes control input items (such as the RUN command and multi-function
input) of the Inverter and frequency reference, monitors the control output (such as
error output and RUN output) of the Inverter, and monitors the Inverter status.
Three Inverters with Slave addresses from 01 to 03 are installed for communica-
tions.
D Checking the Register Numbers
·In the above example, the following three registers are required.
Control Input: Register 0001 Hex for RUN command
Frequency Reference: Register 0002 Hex
Control Output: Register 002C Hex for Inverter status
D Memory Allocations
·The PMCR instruction sends each Slave the data in consecutive words specified by
theoperandandbeginningwiththefirstword(S),andwritesinthememoryareabegin-
ning with the first word (D) the data received.
Communications Chapter 7
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