Siemens ET 200SP Manual page 145

Interrupts/diagnostic messages
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 diagnostics alarms can be found in the section Diagnostic messages
(Page 145).
Table 5- 1 Status and error displays DIAG
LED DIAG
Backplane bus supply of the ET 200SP not OK
Off
Technology module parameters not assigned
Flashes
Technology module parameters assigned but no module diagnos-
tics
On
Technology module parameters assigned and module diagnostics
(at least one error pending)
Flashes
Table 5- 2 Status displays PWR/24VDC
LEDs
PWR 24VDC
Off Off
On On
On Off
Channel LEDs
The DIn.0 LEDs indicate the current level of the associated signals. The LEDs of the digital
outputs DQn.A and DQn.B indicate the desired state.
The flashing frequency of the channel LEDs is limited to approximately 12 Hz. If higher
frequencies are present, the channel LEDs do not indicate the current status but instead
flash at 12 Hz.
Table 5- 3
LEDs DIn.0/DQn.A/DQn.B
144
Meaning
Meaning
Supply voltage missing
Supply voltage is present and OK. Sensor supply
is OK.
Short-circuit or overload at the sensor supply or
supply voltage too low
Status displays DIn.0/DQn.A/DQn.B
Digital input / digital output at 0 level
Off
Digital input / digital output at 1 level
On
Check or switch on the supply voltage on the CPU
or on the interface module.
—
Evaluate the diagnostics alarms and eliminate the
error.
Check the supply voltage.
•
Check the BaseUnit type and the wiring of the
•
BaseUnit.
—
Check the sensor wiring.
•
Check the loads connected to the sensor
•
supply.
Check the supply voltage.
•
Meaning
Technology Module TM Pulse 2x24V (6ES7138‑6DB00‑0BB1)
Manual, 05/2019, A5E35061186-AB
Solution
Solution