Delta PG-40 Specifications download pdf (Page 101)

VFD-B Series

5-66

Error

codes

Explanation

Illegal command code:

The command code received in the command message is not available for the AC

drive.

Illegal data address:

The data address received in the command message is not available for the AC drive.

Illegal data value:

The data value received in the command message is not available for the AC drive.

Slave device failure:

The AC drive is unable to perform the requested action.

Time out:

If Pr09-03 is not equal to zero, Pr09-02=0~2, and there are not any communication on

the bus during setting time period (set by Pr. 09-03), “cE10” will be shown on the

keypad.

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'};

void main(){

int i;

outportb(PORT+MCR,0x08); /* interrupt enable */

1 2 ... 96 97 98 99 100 101 102 103 104 105 106 ... 178 179

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Delta PG-40 Specifications Page 101

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