Diagnostics Alarms - Siemens SIMATIC S7-1500 Manual

LINK LED
Ethernet connection established.
On
Parameter assignment of the technology mod­
ule is valid.
This file must be in Linux or Windows format in order to be read by the TM NPU. Editors outside a Linux environment can
1
change the line endings and thus make the file unreadable for the TM NPU.
7.2

Diagnostics alarms

Diagnostic messages
For each diagnostic event, the ERROR LED on the module flashes and a diagnostic message is
output internally.
You can read out the diagnostic messages, for example, in the diagnostic buffer of the CPU.
You can evaluate the error code with the user program.
Table 7-4 Diagnostic messages with meaning and corrective measures
Diagnostic message
Parameter assignment
error
No load voltage
Communication error
-> LINK LED is permanently
on or off
Diagnostic interrupt
For an incoming or outgoing event, the module triggers a diagnostic interrupt. The CPU
interrupts user program execution and executes the diagnostic interrupt OB. The event that
triggered the interrupt is entered in the start information of the diagnostic interrupt OB.
The module generates a diagnostic interrupt at the following events:
• Parameter assignment error
• Missing supply voltage (configurable)
• Communication error
You can find detailed information on the event in the organization block with the "RALRM"
instruction (read additional interrupt info) and in the STEP 7 online help.
Technology Module TM NPU
Equipment Manual, 07/2023, A5E46384784-AC
Meaning
Error code Meaning
10 The module cannot evaluate paramet­
H
ers for the channel.
Incorrect parameter assignment.
11 External supply voltage of the module is
H
missing.
13 Internal communication error in the
H
module:
Interrupted data connection between
the AI processor and the backplane bus.
Remedy
---
Corrective measures
Correct the parameter assignment.
Connect external supply voltage to
module/channel.
Restart the module.
If the communication error still exists
after the restart, perform the firmware
update again.
Diagnostics
7.2 Diagnostics alarms
41