Frequency Inverter DF51... - Moeller.com.tr

04/07 AWB8230-1541GB The network protocolReading the holding registers [03 hex ]This function reads the content of a series of consecutive holdingregisters with specified register addresses.Example:Reading three set parameters of a DF51 frequency inverter withslave address 5 and the following content:DF51 <strong>com</strong>mand d001 (N) d002 (N-1) d003 (N-2)Register number 1002 hex 1003 hex 1003 hexMessages Output frequency 50 Hz Output current 0.13 A Clockwise rotating fieldRequest:No. Name ExamplehexResponse:No. Name Examplehex1 Slave address (broadcast disabled) 05 1 Slave address 052 Function code 03 2 Function code 033 Register start number (High byte) 10 3 Data length (in bytes) 1) 064 Register start number (Low byte) 02 4 Register start number (High byte) 015 Number of holding register (High byte) 00 5 Register start number (Low byte) F46 Number of holding register (Low byte) 03 6 Register start number + 1 (High byte) 007 CRC-16 (High byte) CRC 7 Register start number +1 (Low byte) 328 CRC-16 (Low byte) CRC 8 Register start number + 2 (High byte) 00The reply record looks as follows:9 Register start number +2 (Low byte) 0110 CRC-16 (High byte) CRC11 CRC-16 (Low byte) CRC1) Number of data bytes needed for a response to the request; here6 bytes to return the content of three holding registers.Response memory 4 5 6 7 8 9Register number + 0(High byte)+ 0(Low byte)+ 1(High byte)+ 1(Low byte)+ 2(High byte)+ 2(Low byte)Register status 01 hex F4 hex 00 hex 32 hex 00 hex 01 hexMessages Output frequency 50 Hz Output current 0.13 A (5 % of 2.6 A) Direction of rotating field• 01 = clockwise• 02 = anticlockwiseIf the read register status <strong>com</strong>mand cannot be run correctly, anexception message is generated (a page 156).151