The block supports you in the following tasks:
• Parameter assignment of the monitoring relay for IO-Link during operation
• Executing IO‑Link port functions
• Backing up/restoring IO-Link device parameters
• Backing up/restoring IO-Link master parameters
Use of the IO-Link Call function block FB1
• Install the demo project "IOL-CALL". You can obtain the demo project on the Internet (https://
support.automation.siemens.com/WW/view/en/33102519/133100).
• Copy the IO-Link Call function block FB1 (including data block DB10) to a STEP 7 project.
• Use the IO-Link Call function block FB1 as described in the demo project.
6.10 Diagnostics via IO‑Link
Temperature monitoring relays for IO‑Link also support diagnostics via IO‑Link in addition to
diagnostics via LEDs and via the display.
The manufacturer-specic diagnostics listed in the table are reported via the diagnostic
mechanism of IO‑Link. The table below provides information on possible causes and remedial
measures:
Table 6-1 Diagnostics via IO‑Link - possible causes and remedial measures
Diagnostics and messages Possible cause Possible remedial measure
Invalid parameter The set parameter is invalid. Specify a parameter in accordance with
the parameter table in Chapter ... .
Self-test error / internal error Fault in internal test. Return the device to the manufacturer.
Limit for overshoot exceeded The temperature set is higher than the lim‐
it value set for overshoot.
• Reduce the temperature.
• Set a higher limit.
Limit for undershoot violated The temperature set is lower than the limit
value set for undershoot.
• Increase the temperature.
• Set a lower limit.
Temperature sensor 1, 2, or 3 - meas‐
uring range overshoot
The temperature is outside the permissible
temperature range of the temperature sen‐
sor used.
Install and congure a suitable tempera‐
ture sensor.
Temperature sensor 1, 2, or 3 - wire
break
• The cable to the temperature sensor
has a short-circuit.
• The temperature sensor is defective.
• Check the connection to the temper‐
ature sensor.
• Use a new temperature sensor.
Temperature sensor 1, 2, or 3 - short-
circuit
• The connection to the temperature
sensor has been interrupted.
• The temperature sensor is defective.
• Check the connection to the temper‐
ature sensor.
• Use a new temperature sensor.
Digital devices with IO-Link
6.10 Diagnostics via IO‑Link
3RS2 temperature monitoring relay
60 Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002
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