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Diagnostics
8.1
LED displays
LEDs H500 to H505 on the COM board provide information about the following states:
①
H500 - POWER OK (green)
②
H501 - BUSFAULT (red)
③
H502 - BUSSYNC (green)
④
H505: TEMP ALARM (red)
Figure 8-1
Name
H500
H501
H502
H505
8.2
Output functions
Requirements
● The MCP is booting.
● There is no communication yet between the MCP and the control, i.e. all of the key LEDs
are flashing.
● The MCP must be in the IE operating mode. For further information, see Settings of switch
S2 (Page 15).
In this state, the output functions described in the following can be sequentially called.
Machine control panel: MCP 398C
Manual, 12/2017, A5E43199783B AA
MCP 398C - LEDs
State
Meaning
Lit
All internal voltages are in the setpoint range.
Not lit
At least one of the generated voltages has fallen below its setpoint; a
reset will be initiated.
Not lit
No PROFINET communication.
Lit
PROFINET is synchronized (STOP state).
Flashes (0.5 Hz) PROFINET is synchronized (RUN state).
Lit
PROFINET group fault.
Lit
The upper limit temperature (T_Critical) of temperature sensor LM77 has
been exceeded.
8
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