Endress+Hauser Proline Promass I 100 - System Integration; Modbus RS485 Information

Proline Promass I 100 Modbus RS485 System integration
Endress+Hauser 39
9 System integration
9.1 Overview of device description files
9.1.1 Current version data for the device
Firmware version 01.02.00 • On the title page of the Operating instructions
• On transmitter nameplate (  12)
• Parameter firmware version
Diagnostics  Device info  Firmware version
Release date of firmware version 04.2013 ---
9.1.2 Operating tools
The suitable device description file for the operating tool is listed in the table below, along
with information on where the file can be acquired.
Operating tool via service
interface (CDI)
Sources for obtaining device descriptions
FieldCare • www.endress.com  Download Area
• CD–ROM (contact Endress+Hauser)
• DVD (contact Endress+Hauser)
9.2 Modbus RS485 information
9.2.1 Function codes
Function codes are used to define which read or write action is carried out via the Modbus
protocol. The measuring device supports the following function codes:
Code Name Description Application
03 Read holding
register
Master reads one or more Modbus
registers from the device.
A maximum of 125 consecutive
registers can be read with 1
telegram: 1 register = 2 bytes
The measuring device does
not make a distinction
between function codes 03
and 04; these codes therefore
yield the same result.
Read device parameters with read
and write access
Example:
Read mass flow
04 Read input
register
Master reads one or more Modbus
registers from the device.
A maximum of 125 consecutive
registers can be read with 1
telegram: 1 register = 2 bytes
The measuring device does
not make a distinction
between function codes 03
and 04; these codes therefore
yield the same result.
Read device parameters with read
access
Example:
Read totalizer value