LED displays on the interface dome of the Compact Field Unit
Table 9-2
Status and error display
LEDs
Meaning
Solution
PWR
(supply)
RN
(operation)
ER/MT
(error/ main‐
tenance)
On
On
Off
Good status: The CFU has established
a connection to the IO controller.
Off
Off
Off
No or insufficient supply voltage.
Check the supply voltage.
ON
ON
ON
Startup of the CFU (approx. 5 s)
-
*
*
ON
Maintenance required (after starting of
the CFU)
Evaluate the diagnostics and elimi‐
nate the error.
(~2 Hz)
(~2 Hz)
(~2 Hz)
Serious internal error.
All channel LEDs also flash.
Check whether a firmware update is
available and carry out the update. If
the error persists, contact Siemens In‐
dustry Online Support.
ON
(~2 Hz)
(~2 Hz)
Unsupported BusAdapter
Replace the BusAdapter.
ON
(~1 Hz)
(~1 Hz)
Internal updates are running after a
firmware update (duration: approx. 30
s).
Wait until the update has been com‐
pleted. The CFU subsequently starts
up automatically.
ON
Flashes
*
No connection to the CPU
Wait a few seconds until the connec‐
tion is established.
If the connection is not established,
check the configuration (device name
and IP address of the CFU).
Check the LEDs on the BusAdapter
Flashes
Flashes
Flashes
Node flashing test
-
*
*
Flashes
Group fault and group fault channels.
Evaluate the diagnostics and elimi‐
nate the error.
Configured structure does not agree
with the actual structure of the CFU .
Check the structure of the CPU wheth‐
er a channel fault or an error at the
fieldbus exists.
Parameter assignment error for PRO‐
FIBUS PA or DIQ.
Evaluate the display of the channels
and fieldbus connections in STEP 7
and eliminate the error.
*
*
(~2 Hz)
● Warning limits for fieldbus
connection exceeded
● Service port enabled
Maintenance required
Diagnostics of the CFU
9.2 Diagnostics via LED displays
SIMATIC CFU
Commissioning Manual, 08/2019, A5E39252870-AD
109
Содержание Simatic CFU
Страница 8: ...Table of contents SIMATIC CFU 8 Commissioning Manual 08 2019 A5E39252870 AD ...
Страница 10: ...Security information SIMATIC CFU 10 Commissioning Manual 08 2019 A5E39252870 AD ...
Страница 16: ...What is a Compact Field Unit SIMATIC CFU 16 Commissioning Manual 08 2019 A5E39252870 AD ...
Страница 34: ...Operation planning 4 9 Use in hazardous areas SIMATIC CFU 34 Commissioning Manual 08 2019 A5E39252870 AD ...
Страница 46: ...Operating modes and functions 5 4 Measure frequency SIMATIC CFU 46 Commissioning Manual 08 2019 A5E39252870 AD ...
Страница 54: ...Installation 6 4 Removing the CFU SIMATIC CFU 54 Commissioning Manual 08 2019 A5E39252870 AD ...
Страница 202: ...Appendix A 10 Contact SIMATIC CFU 202 Commissioning Manual 08 2019 A5E39252870 AD ...
Страница 216: ...Glossary SIMATIC CFU 216 Commissioning Manual 08 2019 A5E39252870 AD ...
Страница 220: ...Index SIMATIC CFU 220 Commissioning Manual 08 2019 A5E39252870 AD ...