Diagnostics of the CFU
9
9.1 Executing diagnostics of the CFU
A wide range of information and tools are available for diagnosing the status of the CFU.
Diagnostic possibilities
● Displays
Some LED displays are located on the front of the CFU. This provides you with an overview
of the status of the CFU. You can find information about this in section "Diagnostics via LED
displays (Page 107)".
● Tools
Information about the most important tools for diagnosing PCS 7 systems is available in the
Service Manual PCS 7 Process Control System; Service support and diagnostics
(www.siemens.com/pcs7-documentation).
– Maintenance Station
With the Maintenance Station, PCS 7 offers you the possibility to call up information
about the status of all the PCS 7 components in hierarchically structured diagnostics
screens. For this, the data of a component is analyzed with the existing online functions
of the associated tools. You can access the ES data from the diagnostics screens (can
be controlled via access protection mechanisms).
– Module information
Select the CFU in HW Config.
Select the menu command PLC > Module Information ... .
– Connection status
Call from Start menu Siemens SIMATIC programs: STEP 7 > NCM S7 > Diagnostics
– Inventory data
Callup via SIEMENS SIMATIC program: SIMATIC > SIMATIC Management Console
(license required) > Plant view > shortcut menu command "Determine inventory data"
– CFU PA: Status of field devices and bus lines
Call via SIMATIC PDM
The CFU PA does not undertake any detailed diagnostics of field devices and bus
cables. The detail diagnostics is possible, in as far as the required device descriptions
are available in suitable programs (for example SIMATIC PDM).
Open SIMATIC PDM > Device > CFU <V...> Configuration.
9.2 Diagnostics via LED displays
Below, you will find tables containing information on the status and error messages of the
Compact Field Unit.
SIMATIC CFU
Commissioning Manual, 08/2019, A5E39252870-AD 107
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