FB_CheckAllowedControllerMacAddr: Check If MAC Address Allowed by Controller

Function Block Description

This function block checks whether a specified MAC address is within the range of MAC addresses allowed for the controller. The application only continues executing if the MAC address matches. Otherwise, the application stops and the controller goes to the HALT state and the system variable i_wLastApplicationError is updated appropriately.

Library and Namespace

Library name: PLCSystemBase

Namespace: PLCSystemBase

Graphical Representation

IL and ST Representation

To see the general representation in IL or ST language, refer to the chapter Function and Function Block Representation.

I/O Variable Description

The following table describes the input variables:

Input	Type	Comment
byAllowedMacAddress	ARRAY[0...5] OF BYTE	MAC address to check [aa.bb.cc.dd.ee.ff]: oi_byMACAddress[0] = aa o... oi_byMACAddress[5] = ff

Input

Type

Comment

byAllowedMacAddress

ARRAY[0...5] OF BYTE

MAC address to check [aa.bb.cc.dd.ee.ff]:

oi_byMACAddress[0] = aa

o...

oi_byMACAddress[5] = ff

The following table describes the output variables:

Output	Type	Comment
xControllerMacAddressOk	BOOL	TRUE = indicates that the MAC address is allowed for this controller.