Siemens TM SIWAREX WP351 HF User Manual

9.5 Diagnostic messages
9.5.1 Error codes and corrective measures
Diagnostic results are displayed as plain text in STEP 7 (TIA Portal) via the online and
diagnostic message view. Evaluate the error codes by means of the user program.
Error code Message Cause/Remedy
9
H
No supply voltage L+ An internal error has occurred. Possible cause: Electronic
weighing system faulty.
● Check the wiring of the 24 V connection on the Base‐
Unit.
● Check the 24 V supply voltage.
10
H
Short circuit (EXC +/-) Short-circuit at the load cell supply (EXC +/-).
● Check the wiring of the load cells.
124
H
Undervoltage (SEN +/-) The returned SEN voltage of the load cells is too low (<
5 V DC)
● Check the wiring of the load cells.
● Check the set load cell type;
4- or 6-conductor load cell type
7
H
Overload (SIG +/-) The signal voltage of the load cells is ≥ +120% of the per‐
missible range.
● Check the wiring of the load cells.
● Check the scale mechanics.
8
H
Underload (SIG +/-) The signal voltage of the load cells is ≥ -+120% of the per‐
missible range.
● Check the wiring of the load cells.
● Check the scale mechanics.
106
H
DQ short-circuit to ground Short-circuit to ground at one of the digital outputs.
● Check the wiring.
● Check the connected actuator.
Reactions to a diagnostic interrupt
The following happens when an event occurs that triggers a diagnostic interrupt:
● The DIAG LED flashes red.
When you have eliminated all errors, the DIAG LED stops flashing red and turns green.
● The S7-1500 CPU interrupts the processing of the user program. The diagnostic interrupt
OB (e.g. OB 82) is called. The event that triggered the interrupt is entered in the start
information of the diagnostic interrupt OB.
● The S7-1500 CPU remains in RUN even if no diagnostic interrupt OB is present in the CPU.
The technology module continues working unchanged if this is possible despite the error.
You can obtain detailed information on the error event in the error organization block with
instruction "RALRM" (Read additional alarm information), in the information system of STEP 7
Interrupts/diagnostic messages
9.5 Diagnostic messages
Technology module TM SIWAREX WP351 HF
144 Operating Instructions, 01/2020, A5E47521010-AA

Siemens TM SIWAREX WP351 HF Specifications

General

Brand	Siemens
Model	TM SIWAREX WP351 HF
Category	Control Unit
Language	English