Operation via the fieldbus CM42-MAA101EBE00
4 Endress+Hauser
1 Operation via the fieldbus
The device supports HART communication via current output 1. Here, digital data are
transmitted in addition to the current. Most process control systems have HART inputs that can
process the data further directly. Process values, the status of the process values and the device
status are transmitted.
The device can also be configured via HART. The device driver enables access to the complete
Setup and Diagnostics menu with few exceptions.
You have the following options for configuration:
• The process control system directly supports the use of DDs (Device Descriptions) and DTMs
(Device Type Managers) or
• you use an additional HART master, e.g. a handheld terminal or FieldCare in conjunction with
a modem.
The interface offered by the DDs and DTMs largely corresponds to the menu structure of local
operation.
It is not possible to access all the tables and the calibration with DDs or DTMs. In addition, it is
not possible to access the logbooks with a handheld terminal.
A detailed description of the commands and features supported by the device is provided in
SD01325C under "Document/Manuals/Software" and then "Special Documentation (SD)" on
www.endress.com/cm42.
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