Delta Electronics VFD-M manual Parameters

Chapter 4 Parameters

Content	Address	Functions
	2106H	Output Voltage E (XXX.X)
	2107H	Step number of Multi-Step Speed Operation (step)
	2108H	Time of PLC Operation (sec)
	2109H	Value of External Trigger (count)
	210AH	The Correspondent Value of Power Factor (XXX.X)
	210BH	Pr.65 X Low word of H (XXX.XX)
	210CH	Pr.65 X High word of H (XXX.XX)
	210DH	AC Drive Temperature (XXX.X)
	210EH	PID Feedback Signal (XXX.XX)
	210FH	PID Target Value (XXX.XX)
	2110H	AC Drive Mode Type Information

3.7 Communication program of PC:

The following is a simple example of how to write a communication program for Modbus ASCII mode on a PC by C language.

#include<stdio.h>

#include<dos.h>

#include<conio.h>

#include<process.h>

#define PORT 0x03F8 /* the address of COM1 */ /* the address offset value relative to COM1 */ #define THR 0x0000

#define RDR 0x0000 #define BRDL 0x0000 #define IER 0x0001 #define BRDH 0x0001 #define LCR 0x0003 #define MCR 0x0004 #define LSR 0x0005 #define MSR 0x0006 unsigned char rdat[60];

/* read 2 data from address 2102H of AC drive with address 1 */ unsigned char tdat[60]={':','0','1','0','3','2','1','0',’2', '0','0','0','2','D','7','\r','\n'};

4-70 Revision May 2008, ME14, SW V3.04