KROHNE UFC 400 Modbus EN - Manual (Page 4)

1
GENERAL INFORMATION
4
UFC 400
www.krohne.com 05/2013 - 4002744801 - AD Modbus UFC 400 R01 en
1.1 Scope of the document
These instructions are supplementary to the signal converter handbook. For all other data, use
the relevant chapters of the handbook. If you do not have this document, please contact the
nearest office or download them from the manufacturer's internet site.
1.2 Scope of delivery
The information in this supplementary manual only contains the data applicable to MODBUS
communication.
The technical data in the handbook shall be valid in its current version, provided that it is not
rendered invalid or replaced by this supplement.
1.3 Modbus protocol interface
The Modbus interface to the signal converter is implemented in the Modbus RTU
communications protocol and is done in accordance with the specification and requirements of
the "Modbus Protocol Specification V1.1b".
The physical electrical parameters of the Modbus specification are defined by the EIA/TIA-485
(RS485) standard and the "Modbus over Serial Line - Specification and Implementation Guide
V1.02".
Both specifications can be obtained on the official website of the Modbus organisation:
http://www.modbus.org