Balluff BNI PNT-502-102-Z078 Konfigurationsanleitung Seite 69

BNI PNT-508-105-Z067 / BNI PNT-508-105-Z077 / BNI PNT-502-102-Z078
Network interface
2
System integration (continued)
Function module
To be able to write or read out the ISDU data of connected
IO-Link devices during operation, the common
programming interfaces of the control manufacturers
provide corresponding function modules or libraries.
Fig. 2-17: Function module
REQ: Use Request to start the action in order to write or
read data.
ID: The ID is permanently declared by the master via the
hardware configuration. This can be found under S
in the hardware identification (see Fig. 2-18).
cOnStantS
► Select the hardware ID of the module with the
extension Head.
Fig. 2-18: Hardware configuration: System constants
www.balluff.com
CAP Value: This is assigned by the manufacturer. For
Balluff products, it is the value 0xFF (255).
Read/Write: The command is defined here. To read data,
it must be a 0; to write data, it must be a 1.
Port: Here you select the port to which the device has
been connected. The master counts as 0 and the ports
are counted from 1...8.
Index: This is the index of the IO-Link subscriber being
read out or written. This can be found in the user's guide
for the IO-Link device.
SubIndex: The sub-index is defined by the data to be
processed. This can also be found in the operating
instructions for the connected IO-Link device.
LEN: This is the length of the data. This can also be found
in the parameter data in the user's guide for the IO-Link
device.
RECORD_IOL_DATA: A data module is used for
communication. The structure must be established in Array
of Bytes. The data to be changed is written into this array.
DONE_VALID: Confirms the successful request to read or
write data.
BUSY: Shows the working state of the module.
ERROR: If an error occurs in the function, it is reported
here.
STATUS: Error status of the function
IOL_STATUS: Describes the current status or an error.
RD_LEN: Shows how many bytes were read by the
yStem module.
english 19