IO-Link master
28
18 Profibus data model
The unit has a modular design� The "Status/control module" is always located
in slot 1, with 4 bytes of IN and OUT process data respectively� In slots 2 to 9,
the operating mode as well as the process data length can be configured for the
respective IO-Link port�
18.1 Status/control module
IN process data
Byte
Byte 0
Byte 1
Byte 2
Byte 3
Bit
0���7
8���15
16���23
24���27
28���31
Function
Port status
(COM Status)
PD VALID
state
DI state on pin
4 (C/Q)
DI state on
pin 2
Reserved
Connection
X01���X08
X01���X08
X01���X08
X01���X04
-
Pin
4
4
4
2
-
Port
1���8
1���8
1���8
1���4
-
The port state indicates whether the corresponding port has established communication with the
IO-Link device�
The PD valid state indicates whether the IO-Link process data of the corresponding port is valid�
The DI state on pin 4 indicates the state of the corresponding IO-Link port in the DI operating mode�
The DI state on pin 2 indicates the state of the hardwired digital inputs on pin 2�
OUT process data
Byte
Byte 0
Byte 1
Byte 2
Byte 3
Bit
0���7
8���15
16���23
24���31
Function
Port status
(COM Status)
Reserved
DO state on
pin 4 (C/Q)
Reserved
Connection
X01���X08
-
X01���X08
-
Pin
4
-
4
-
Port
1���8
-
1���8
-
Byte 0 (COM control) can be used to temporarily (as long as the corresponding COM control bit is
set) switch one or more IO-Link ports that were previously configured in digital input mode (DI) to
IO-Link mode� Cyclic and acyclic communication can therefore be established with the connected
IO-Link device�
DO state on pin 4 (C/Q)
The digital output on the corresponding port can be controlled via the process data� The I/O-Link port
must be set beforehand to function in the DO operating mode�