KROHNE IFC 300 Converter Modbus EN - Manual (Page 2)

CONTENTS
2 www.krohne.com 07/2010 - 4000410703 - AD Modbus IFC 300 R03 en
IFC 300
1 Important information 3
2 Technical data 4
2.1 General technical data ..................................................................................................... 4
2.2 Technical data of the Modbus interface (acc. to EIA standards) ..................................... 4
3 Connection in bus systems 5
4 Local configuration 6
5 Electrical connection 7
6 Modbus protocol 8
6.1 General information concerning the protocol ................................................................. 8
6.2 RTU frame format............................................................................................................. 8
6.3 Addressing........................................................................................................................ 9
6.4 Overview of supported functions...................................................................................... 9
6.5 Device identification on the Modbus interface............................................................... 10
6.6 Coil registers .................................................................................................................. 10
6.6.1 Converter controls ................................................................................................................ 10
6.6.2 Counter controls ................................................................................................................... 11
6.6.3 Start calibration functions .................................................................................................... 11
6.7 Input registers ................................................................................................................ 12
6.8 Holding registers............................................................................................................ 14
6.8.1 Counter parameters ............................................................................................................. 14
6.8.2 Process input filter parameters ........................................................................................... 15
6.8.3 Modbus parameters.............................................................................................................. 17
6.9 Diagnostics ..................................................................................................................... 17
6.10 Calibration procedures................................................................................................. 18
6.10.1 Zero Flow Calibration.......................................................................................................... 18
6.10.2 Coil Temperature Calibration ............................................................................................. 19
6.10.3 Conductivity Calibration ...................................................................................................... 20
7 Notes 21
.book Page 2 Friday, July 9, 2010 10:31 AM