Supported platforms: CODESYS 2.3

 

ISOBUS_AUX_FunctionHandler (FB)

Description

This function block is the main handler for AUX-N Functions (see also ISO 11783-6 Annex J).

Initializes Input maintenance and Input status Rx PGNs

Handles AUX Function assignment commands between VT - ECU

Handles AUX Function preferred assignment command between VT - ECU

Monitors AUX Inputs

Updates AUX Function data to application

 

o_AUXInputInfo contains list of AUX Inputs which are monitored.

i_pAUXFunctions contains list of AUX Functions defined by application code template. AUX Function objects are automatically updated.

 

Application needs to trigger loading of preferred assignments with ISOBUS_AUX_LoadPreferred (FUN).

AUX Function preferred assignments needs to be initialized by application before triggering the loading process.

 

If preferred input is detected while handler is already in operational state, the output o_PreferredInputDetected is set TRUE.

Application needs to re-trigger preferred assignment loading.

 

Following image illustrates the architecture of AUX-N function handling in system level:

 

Limitations

For AUX-N requirements see ISOBUS Conformance Guide

 

For implementation guide see How to use AUX Functions

 

Inputs

Input variable name

Data type

Range

Description

i_pVTClient

POINTER TO ISOBUSVtClient

≠ 0

Pointer to used VT client instance

i_pAddressClaimServer

POINTER TO ACL_AddressClaimServer

≠ 0

Pointer to used ACL instance

i_pJ1939

POINTER TO J1939

≠ 0

Pointer to used J1939 instance

i_pAUXFunctions

POINTER TO ISOBUS_AUX_Function

≠ 0

Pointer to AUX Functions list

i_AUXFunctionCount

UINT

 

Count of AUX Functions in list

i_Configuration

ISOBUS_AUX_FunctionHandlerConfig

 

Handler configuration parameters

Outputs

Output variable name

Data type

Description

o_State

ISOBUS_AUX_FunctionHandlerState

State of AUX Handler

o_Error

ISOBUS_ErrorCodes

Errors, ISOBUS_ERR_SUCCESS if OK

o_AUXInputInfo

ARRAY [1..G_ISOBUS_AUX_MAX_NUMBER_OF_INPUT_DEVICES] OF ISOBUS_AUX_FunctionInputInfo

List of monitored AUX Inputs

o_AUXInputListFull

BOOL

Handler's AUX Input monitored list is full, no new inputs can be added

o_PreferredAssignmentState

ISOBUS_AUX_PreferredAssignmentState

Status from preferred assignment response

o_PreferredInputDetected

BOOL

Preferred AUX Input is detected during operational state

 

Example code

AUX Function handler is included in the MultiTool Creator code template.

For implementation guide see How to use AUX Functions.

 

 

See also

 

 

 

Source file topic100733.htm

Last updated 13-Jun-2024