Fallback Mode
Fallback mode provides the benefits of configuration in IO-Link mode
and the same performance of “Digital Input” or “Digital Input, Timestamp” modes. When a
channel is set to a Fallback mode:
- You can configure the device through the IO-Link interface.
- The device operates in “Digital Input” or “Digital Input, Timestamp” mode.
The device operates in Fallback mode when you configure the channel as “Digital Input,
Fallback” or “Digital Input, Timestamp, Fallback”.
You can easily switch the device to digital input mode for operation by uninhibiting the
device, or switch to IO-Link mode for configuration by inhibiting the device.
When the device is used in Fallback mode, no input tag or output tag is generated for the
device connection. Input data is available in the input tag of the IO-Link master module
for that channel –
name:I:Ptxx
, where xx is the channel number.For example, if the device is attached to Port 2 (Ch04 for RTB screw 9) and the channel
mode is set to “Digital Input, Fallback” or “Digital Input, Timestamp, Fallback”, then
input data for the device is available in the tag
IOLM:I:Pt04
.
WARNING:
If you replace an IO-Link device without first inhibiting the device, the device
configuration is not synchronized with the project.
For more information on device replacement, see Replace IO-Link Devices.
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