Download CFW700 - Modbus RTU

Contents
5.2
6
DETAILED DESCRIPTION OF THE FUNCTIONS .....................................................20
6.1
6.2
6.3
6.4
6.5
7
MEMORY MAP................................................................................................................................. 18
FUNCTION 03 – READ HOLDING REGISTER ............................................................................... 20
FUNCTION 06 – WRITE SINGLE REGISTER ................................................................................. 20
FUNCTION 16 – WRITE MULTIPLE REGISTERS .......................................................................... 21
FUNCTION 43 – READ DEVICE IDENTIFICATION........................................................................ 22
COMMUNICATION ERRORS.......................................................................................................... 22
FAULTS AND ALARMS RELATED TO THE MODBUS RTU COMMUNICATION....24
A128/F228 – SERIAL COMMUNICATION TIMEOUT ............................................................................... 24
I.
APPENDICES .............................................................................................................25
APPENDIX A.
APPENDIX B.
ASCII TABLE.................................................................................................................... 25
CRC CALCULATION USING TABLES ........................................................................... 26
CFW700 | 4