Siemens simatic ET 200MP Manuel - Sayfa 18

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Siemens simatic ET 200MP Manuel
Interrupts/diagnostic alarms
5.1 Status and error displays
Meaning of the LED displays
The following tables explain the meaning of the status and error displays. Corrective
measures for diagnostic alarms can be found in chapter Diagnostic alarms (Page 20).
Table 5- 1
Status and error displays RUN/ERROR
LED
RUN
ERROR
Off
Off
Flashes
Off
On
Off
Flashes
On
Flashes
Flashes
Table 5- 2
PWR status display
LED PWR
Off
On
Table 5- 3
CHx status display
LED CHx
Off
On
On
18
Meaning
Voltage missing or too low at backplane bus
The module starts and flashes until the valid
parameter assignment is set.
Module is configured
Indicates module errors (there is an error on at
least one channel, for example, a wire break).
Hardware defective
Meaning
Supply voltage L+ too low or missing
Supply voltage L+ is present and OK
Meaning
0 = Status of the input signal
1 = Status of the input signal
Diagnostics: Wire break
Supply voltage L+ too low or missing
To correct or avoid errors
Switch on the CPU and/or the system
•
power supply modules.
Verify that the U connectors are inserted.
•
Check to see if too many modules are
•
inserted.
---
Evaluate the diagnostics data and eliminate
the error (e.g., wire break).
Replace the module.
To correct or avoid errors
Check supply voltage L+.
---
To correct or avoid errors
---
---
Check the wiring. When using simple switches,
deactivate diagnostics or connect a resistor
(25 kΩ ... 45 kΩ) to the encoder contacts.
Check supply voltage L+.
DI 16x24VDC HF Digital Input Module (6ES7521-1BH00-0AB0)
Manual, 01/2013, A5E03485952-01