Further Information - Siemens SITRANS F Operating Instructions Manual

Modbus Frame
The Modbus frame is shown below, and is valid for both requests and responses.
Table 1- 1
SLAVE ADDRESS
1 Byte
References
For further information, please refer to the following specification and guidelines available at
the Modbus Organisation (http://www.modbus.org/) Website
1. Serial Line Specification & Implementation guide v. 1.0
2. Application Protocol Specification v. 1.1
1.4

Further Information

The contents of these Operating Instructions shall not become part of or modify any prior or
existing agreement, commitment or legal relationship. All obligations on the part of Siemens
AG are contained in the respective sales contract which also contains the complete and
solely applicable warranty conditions. Any statements contained herein do not create new
warranties or modify the existing warranty.
Product information on the Internet
The Operating Instructions are available on the CD-ROM shipped with the device, and on
the Internet on the Siemens homepage, where further information on the range of SITRANS
F flowmeters may also be found:
Product information on the internet (http://www.siemens.com/flow)
Worldwide contact person
If you need more information or have particular problems not covered sufficiently by the
operating instructions, please get in touch with your contact person. You can find contact
information for your local contact person on the Internet:
Local contact person (http://www.automation.siemens.com/partner)
Modbus RTU RS485
Operating Instructions, 06/2010, A5E00753974-04
Modbus Frame
FUNCTION MODE
1 Byte
DATA
0 ... 252 Bytes
Introduction
1.4 Further Information
CRC
2 Bytes
7