Diagnostics Alarms - Siemens SIMATIC S7-1500 Manual
Technology module tm npu 6es7556-1aa00-0ab0
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Also See for SIMATIC S7-1500:
- System manual (523 pages) ,
- Function manual (402 pages) ,
- Manual (188 pages)
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LINK LED display
Table 7- 3
Meaning of the LINK LED display
LINK LED
Off
Flashes twice at inter-
vals
Flashes three times at
intervals
Lit permanently
This file must be available in Linux format to be read by the TM NPU. Editors outside the Linux environment can change
*)
the line breaks and thus make the file unreadable for the TM NPU.
7.2
Diagnostics alarms
Diagnostics alarms
A diagnostic interrupt is generated and the ERROR LED flashes on the module for each
diagnostics event. You can read out the diagnostics alarms, for example, in the diagnostics
buffer of the CPU. You can analyze the error code with the user program.
Table 7- 4
Diagnostics alarms, their meaning and corrective measures
Diagnostics alarm
Parameter assignment
error
No load voltage
Communication error
(in combination with
flashing LINK LED)
Technology Module TM NPU
Equipment Manual, 09/2020, A5E46384784-AA
Meaning
No Ethernet link detected.
Module is downloading the file with the appli-
cation.
Firmware update of the module is performed.
Ethernet connection established.
Error code
Meaning
10
The module cannot evaluate parame-
H
ters for the channel.
Incorrect parameter assignment.
11
External supply voltage of the module
H
is missing.
13
Firmware update running.
H
7.2 Diagnostics alarms
Remedy
Check whether:
•
The Ethernet configuration is disabled
•
The configuration file "network.conf" was
saved correctly
*)
For the correct coding of the configuration
file, read the last paragraph in the section Di-
agnostics alarms (Page 23).
•
No Ethernet cable is inserted
---
---
---
Corrective measures
Correct the parameter assignment.
Connect external supply voltage to
module/channel.
Wait for completion of the firmware
update:
1. Wait until the LINK LED is perma-
nently off
2. Restart the module
Diagnostics
23
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