Interrupts; Diagnostics Alarms - Siemens Simatic ET 200AL Manual

Interrupts/diagnostic alarms

5.2 Interrupts

5.2 Interrupts
Diagnostic interrupts of the DIQ 16x24VDC/0,5A 8xM12 IO-Link digital input/digital output
module.
Diagnostic interrupt
The digital input/digital output module generates a diagnostic interrupt at the following
events:
• Short-circuit of an encoder supply to ground, or
• Short-circuit of an output to ground
• Load voltage 2L+ missing or too low
5.3

Diagnostics alarms

For each diagnostic event, a diagnostics alarm is issued and the LED DIAG flashes red on the
digital input/digital output module.
You can read out the diagnostics alarms, for example, from the status of the IO-Link master.
You can evaluate the error codes with the user program.
Table 5- 4
Diagnostics alarm Error code
Short circuit
Load voltage 2L+
missing
= If a short-circuit of an encoder supply to ground is detected, the diagnostic alarm "Short-circuit" is
1
always output. This alarm is output even if all channels are configured as outputs.
= If you are using ET 200AL modules in connection with the ET 200SP distributed I/O system, the
2
diagnostic alarm "Load voltage missing" is displayed.
20
Diagnostics alarms, their meanings and corrective measures
0x7710
1
0x7711
0x5112
2
IO-Link digital input/digital output module DIQ 16x24VDC/0,5A 8xM12 (6ES7143-5AH00-0BL0)
Meaning
Short-circuit of an encoder sup-
ply to ground
Short-circuit of an output to
ground
Load voltage 2L+ missing or too
low
Solution
• Eliminate the short-circuit
• Check the supply voltage
• Check the module
Equipment Manual, 08/2021, A5E47926885-AB