Origin Search (DINT) |
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| Name | Origin Search (DINT): MD_CPU051_Home_DINT |
| Basic Function | Executes origin search to define an origin. | ||
| Symbol |  |
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| Originates from | Tsunagi Lab Europe | ||
| Created by | OEE-HQ HvB (creation and testing) | ||
| File Name | MD_CPU051_Home_DINT.cxf | ||
| Applicable models | CPU Unit | CJ2M-CPU Unit version 2.0 or higher with max. two CJ2M-MD211 (NPN) or CJ2M-MD212 (PNP) |
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| CX-Programmer | Version 9.1.2 or higher | ||
| Conditions for usage | None. | ||
| Function Description | Executes origin search for the output specified with Axis No. (Axis), based on the PLC Setup Settings in the CPU Unit when Start (Execute) is turned ON (using the selected Pulse output method). After the origin search is completed, Present Position Change will be executed (the value specified in Position data (Position) will become the present position). Even when 0 is specified in Position data (Position), Present Position Change will be executed.
Note: |
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| Kind of FB definition | Connect Always ON type Connect the EN input to the Always ON Flag (P_ON). The same instance cannot be used in two or more places. |
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| FB Precautions | • When using the Pulse output 0&1 or 2&3 simultaneously, use the same Pulse output method for them. The MD_CPU0*_* function blocks are offered 'as is' and may serve as a basis for development. Users should previously test its adequacy to the final application. Omron can not be held responsible in case of malfunction. |
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| EN input condition | • Connect the EN input to the Always ON Flag (P_ON). • If a different type of bit is connected to EN, the FB outputs will be maintained when the connected bit is turned OFF. |
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| Restrictions other | • This FB does not use Acceleration/deceleration curve designation, Origin search high-speed, Origin search proximity speed, Origin search acceleration rate, Origin search deceleration rate, and Origin compensation. To use these, specify them outside of the FB. • After the pulse stops, when Present Value Preset is not executed in FB, due to command errors or others, it becomes an error. |
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| Application example | Turning the start trigger from OFF to ON will start operating the Servomotor connected to the Pulse output 0 on the CJ2M-MD21* Unit to perform origin search. After the origin search is completed, Present Position Change will be executed.
After the origin search is completed, Present Position Change will be executed.
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| Related manuals | CJ2M Pulse I/O User Manual (W486) CJ2 Hardware User Manual (W472) |
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Variable Table
Input Variables
| Name | Variable name | Data type | Default | Range | Description |
|---|---|---|---|---|---|
| EN | EN | BOOL | 1 (ON): Starts FB 0 (OFF): Does not start FB |
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| Axis No. | Axis | INT | &0 | &0 to &3 | &0: Pulse output 0, &1: Pulse output 1 &2: Pulse output 2, &3: Pulse output 3 |
| Start | Execute | BOOL | 0(OFF) | OFF -> ON (rising edge) starts origin search | |
| Position data | Position | DINT | +0 | -2147483648 to +2147483648 | Specifies the position data to be used in the Present Position Change. Unit: Pulses |
| Pulse output method | OutPulseSelect | INT | &0 | &0 to &1 | &0: CW/CCW output &1: Pulse + direction output |
Output Variables
| Name | Variable name | Data type | Range | Description |
|---|---|---|---|---|
| ENO | ENO | BOOL | 1 (ON): FB operating normally 0 (OFF): FB not operating normally |
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| Origin search completed | Done | BOOL | 1 (ON) indicates that an origin search has been completed. | |
| Error flag | Error | BOOL | 1 (ON) indicates that an error has occurred in the FB. | |
| Error code (May be omitted) | ErrorID | WORD | The error code of the error occurred in the FB will be output. For details of the errors, refer to the sections of the manual listed in the Related manuals above. When Unit No. or Axis. No. is out of the range, #0000 will be output. |
Revision History
| Version | Date | Contents |
|---|---|---|
| 1.00 | 16-Feb-2012 | Based on Function Block: _NCCPU051_Home_DINT |
Note
This manual is a reference that explains the function block functions. It does not explain the operational limitations of Units, components, or combinations of Units and components. Always read and understand the Operation Manuals for the system’s Units and other components before using them.
