Siemens SIMATIC ET 200eco PN M12-L Equipment Manual page 73

Modbus TCP
7.2 Diagnostics
Behavior of the LEDs RN/NS (RUN/network status), ER/MS (ERROR/module status) and MT/IO
(MAINT/IO status)
The LEDs display the status with the highest priority if there are different LED states due to
overlaid events. (0 = off, 1 = green flashing, 2 = green, 3 = yellow, 4 = red flashing, 5 = red)
The following table shows the meaning of the RN/NS, ER/MS and MT/IO LEDs:
Table 7- 3
RN/
NS
Off
Flash-
ing
On
Flash-
ing
On
On
Flash-
ing
Flash-
ing
Flash-
ing
Flash-
ing
Flash-
ing
Flash-
ing
72
Error display of the LEDs
LEDs
ER/ MT/
MS IO
Missing or insufficient supply voltage
at the I/O device.
Off Off
I/O device on, no data exchange
Off Off
The I/O device is exchanging data
with any connection.
Off Off
MultiFieldbus project is present in the
I/O device, no data exchange
Off
Flash-
ing
The I/O device exchanges data with-
out errors via a Modbus TCP connec-
On Off
tion
The I/O device exchanges data. An
error has occurred in the I/O device.
Off
Flash-
ing
The I/O device does not exchange
data. An error has occurred in the I/O
Off
Flash-
device.
ing
An existing connection to Modbus
TCP was terminated by a timeout
Off
Flash-
ing
An existing connection to Modbus
TCP was terminated by a timeout
Off
Flash-
ing
Test of LEDs during startup: The three
LEDs light up simultaneously for ap-
Flash- Flash-
proximately 0.25 s in red. Then for
ing ing
approximately 0.25 s in green.
Hardware or firmware defective.
Flash- Flash-
ing ing
The "Node flash test" is running (the
P1 LK and P2 LK LEDs are also flash-
Flash- Flash-
ing).
ing ing
CM 8x IO-Link + DIQ 8x24VDC M12-L 8xM12 (6ES7148-6JJ00-0BB0) communications module
Meaning
•
Check the following:
•
•
•
Check the following:
•
•
---
•
Equipment Manual, 12/2022, A5E51718265-AB
Solution
Check the supply voltage.
Configuration
Parameter settings
PNIO diagnostics
Configuration
Parameter assignment
You can read out the service data
with MFCT.