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RSTi-OM User Manual
GFK-3212A
3.7.1
IO-Link Port Modules
An IO-Link port can be configured as one of the following:
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•
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IO-Link Port modules are used to configure the mode of an IO-Link port.
All the IO-Link modules start with the IO-Link (that is: IO-Link In, IO-Link Out and IO-Link In/Out)
configure the corresponding IO-Link port as IO-Link Mode. An SIO Digital In module configures the IO-
Link port as SIO Digital In Mode. Similarly, an SIO Digital Out module configures the port as SIO Digital
Out Mode.
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•
•
Configuring
IO-Link Mode
SIO Digital In Mode
SIO Digital Out Mode.
An IO-Link module can be input only, output only, or both. In addition, there are different
modules with various IO data sizes (1 to 32 bytes). For example, the IO-Link In/Out 4 bytes
module is for an IO-Link device that supports up to 4-byte PDI data and 4-byte PDO data. If
you do not find an exact matching IO size, select the next size (larger). For instance, use IO-
Link is a 16-bytes module for an IO-Link device that has 10-byte PDI data. The unused PDI data
is filled with zeros.
For SIO Digital In the module, the PDI data is fixed at 1-byte. A high voltage on the IO-Link port
C/Q Pin results in a 0x01 PDI data; a low voltage on the C/Q Pin results in a 0x00 PDI data.
For the SIO Digital Out module, the PDO data is fixed at 1-byte. A zero output value from an
SIO Digital Out module sets the IO-Link port C/Q pin to low voltage. Any non-zero output
value sets the C/Q pin to high voltage.
IO-Link Port Module Input Data Format
Byte Offset
Description
0
PDI Data Block byte 0
1
PDI Data Block byte 1
...
...
31
PDI Data Block byte 31
Section 3
Jun 2021
29
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