System integration Proline Promass E 100 Modbus RS485
44 Endress+Hauser
9 System integration
9.1 Overview of device description files
9.1.1 Current version data for the device
Firmware version 01.03.zz • On the title page of the Operating Instructions
• On the transmitter nameplate
• Firmware version
Diagnostics → Device information → Firmware
version
Release date of firmware version 10.2014 ---
For an overview of the different firmware versions for the device
9.1.2 Operating tools
The suitable device description file for the individual operating tools is listed in the table
below, along with information on where the file can be acquired.
FieldCare • www.endress.com → Download Area
• CD–ROM (contact Endress+Hauser)
• DVD (contact Endress+Hauser)
DeviceCare • 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
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