MC_InitAxis

 Function A function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. - Initializes a PLCopen A vendor -and product- independent worldwide association active in Industrial Control and aiming at standardizing PLC file formats based on XML. Axis' data.

Inputs

Input	Data Type	Range	Unit	Default	Description
En	BOOL	0, 1	N/A	No default	Requests to create a PLCopen axis.
AxisNumber	UINT	1, 256	N/A	No default	Axis number.
VelocityLimit	LREAL	No range	User unit/sec	No default	Reserved for future use.
LowerLimit	LREAL	No range	User units	No default	Reserved for future use.
UpperLimit	LREAL	No range	User units	No default	Reserved for future use.
LimitControl	UINT	0, 2	N/A	No default	Reserved for future use.
PosErrorLimit	LREAL	No range	User units	No default	Position Position means a point in space which is described by different coordinates. Depending on the used system and transformation it can consist of a maximum of six dimensions (coordinates).This means three Cartesian coordinates in space and coordinates for the orientation. In ACS there can be even more than six coordinates. If the same position is described in different coordinate systems the values of the coordinates are different. error limit: When the Position Error (command position – actual position) exceeds this value, an E-stop is generated.
InPositionBand	LREAL	No range	User units	No default	In-position bandwidth In computer networking, bandwidth refers to a data rate measured in bits per second (e.g., network throughput). The reason for the connection of data rate with the term bandwidth is that the limit to the data rate of a physical communication link is related to its bandwidth in hertz. In a servos system, the frequency at which the small signal response begins to drop off. Stage performance is enhanced by increasing the servo bandwidth. Structural resonances typically limit the achievable bandwidth.: When the axis actual position is within this distance from its programmed The act of performing a sequence of instructions or commands. endpoint, the axis is considered in position.

Outputs

Output	Data Type	Range	Unit	Description
OK	BOOL	No range	N/A	Indicates the initialization is complete. See Pipe Network - General Rules.

Remarks

• A call to this function is automatically generated when the application is compiled.
• This is based on the data entered in the PLCopen Axis Data dialog.

Figure 1: MC_InitAxis

FBD Language Example

FFLD Language Example

IL Language Example

Not available.

ST Language Example

(* MC_InitAxis ST Structured text - A high-level language that is block structured and syntactically resembles Pascal. example *)
AxisNumber1    := 1;
VelocityLimit1 := 10000; (*User unit/second*)
LowerPosLimit1 := 0;
UpperPosLimit1 := 0;
LimitControl1  := 0; (* Ignore lower and upper pos limit*)
PosErrorLimit1 := 10; (*User unit*)
InPosBand1     := 0;
MC_InitAxis(AxisNumber1, VelocityLimit1, LowerPosLimit1, UpperPosLimit1, LimitControl1, PosErrorLimit1, InPosBand1);