MC_ReadAxisErr

Description

The Function BlockA function block groups an algorithm and a set of private data. It has inputs and outputs. MC_ReadAxisErr returns the error status of the specified axis.

Figure 7-125: MC_ReadAxisErr

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• This function or function block returns cached data. See Programming a Dual Core Controller for more information.

Arguments

For more detail on how inputs and outputs work, refer to PLCopen Function Blocks - General Rules

Input

Enable	Description	requests to read the error status of the axis
	Data type	BOOL
	Range	0, 1
	Unit	N/A
	Default	—
Axis	Description	Name of a declared instance of the AXIS_REF library function. For more details,About Axis Name and Number
	Data type	AXIS_REF
	Range	[1,256]
	Unit	N/A
	Default	—

Output

Valid	Description	Indicates the AxisErrorID output is valid
	Data type	BOOL
Busy	Description	Indicates this function block is executing
	Data type	BOOL
Error	Description	Indicates an invalid input
	Data type	BOOL
ErrorID	Description	Indicates the error if Error output is set to TRUE See table in PLCopen Function Block ErrorID Output
	Data type	INT
AxisErrorID	Description	Indicates the error status of the axis. Each bit indicates a specific error. Both emergency-stop (E-stop) and controlled-stop (C-stop) errors are indicated. The table below defines the bits of this output.
	Data type	INT

 

Hexadecimal	Decimal	Description
0000H	0	No Error
0001H	1	User-set E-stop via MC_EStop, E-stop
0002H	2	Loss of Feedback, E-stop
0004H	4	Drive Fault, E-stop
0008H	8	Drive Communication Failure, E-stop
0400H	1024	Synchronization Error, C-stop
0700H	7192	Drive Overtravel Limit Exceeded, Cstop (see Overtravel Conditions)

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• Multiple errors can be active at the same time. For example, if a User-set E-stop and an Excess Position Error E-stop are both active, the value would be 00000011H (17 decimal).

Example

Structured Text

            (* MC_ReadAxisErr ST example *)
            
Inst_MC_ReadAxisErr( TRUE, Axis1 );
//Inst_MC_ReadAxisErr is an instance of MC_ReadAxisErr function block
AxisErrorBits := Inst_MC_ReadAxisErr.AxisErrorID; //AxisErrorID contains the error bits

Ladder Diagram

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