IDN_CHK: Check SERCOSIDN

(Original Document)

Function Description

This function block compares the data of the specified IDN on a SERCOSdrive to an expected value.

Additional parameters and may be configured.

Representation in FBD

Representation:

Representation in LD

Representation:

Representation in IL

Representation:

CAL IDN_CHK_Instance (S:=CHK_IDN_SA1, R:=Reset,
    SA_ID:=SA1, STD_PROP:=STD, IDN:=38, IN_RAW:=3000,
    MFB:=MFB, NOT_EQ=>Miscompare)

Representation in ST

Representation

IDN_CHK_Instance (S:=CHK_IDN_SA1, R:=Reset,
    SA_ID:=SA1, STD_PROP:=STD, IDN:=38, IN_RAW:=3000,
    MFB:=MFB, NOT_EQ=>Miscompare) ;

Parameter Description

Description of input parameters:

Parameter	Data Type	Meaning
S	BOOL	Rising input checks SERCOSIDN.
R	BOOL	Resets block and prevents check.
SA_ID	INT	Axis ID for the SercosAxis to be checked.
STD_PROP	BOOL	Data value: Standard (0) IDN or Proprietary (1) IDN.
IDN	UINT	IDN of the data to check.
IN_RAW	UDINT	Expected data value.

Description of in-output parameters:

Parameter	Data Type	Meaning
MFB	MMFBlock	Must be connected to the MMFStart block of 200 registers.

Description of output parameters:

Parameter	Data Type	Meaning
Q	BOOL	True when the check has completed (reset by R).
ERROR	INT	First error code that is generated during the check.
NOT_EQ	BOOL	True if drive data does not match the IN_RAW.

Example

When CHK_IDN_SA1 turns on, the value of IDN 38 (positive velocity limit) in drive SA1 is compared with the value 3000. If the value in the drive is not 3000, output signal Miscompare will turn on.

Runtime Errors

For a list of all error codes and values of the block, refer to Tables of Error Codes for the Motion Library.

EN stands for ENable; it is an optional block input. When the EN input is enabled, an ENO output is set automatically.

If EN = 0, the block is not enabled; its internal program is not executed, and ENO is set to 0.

If EN = 1, the block's internal program is run and ENO is set to 1. If an error occurs, ENO is set to 0.

If the EN input is not connected, it is set automatically to 1.

ENO stands for Error NOtification; this is the output associated with the optional input EN.

BOOL is the abbreviation for the Boolean type. This is the basic data type in computing. A BOOL variable can have either of the following two values: 0 (FALSE) or 1 (TRUE).

A bit extracted from a word is of type BOOL, for example: %MW10.4.

INT is the abbreviation of single INTeger (encoded in 16 bits).

The upper/lower limits are as follows: -(2 to the power of 15) to (2 to the power of 15) - 1.

-32768, 32767, 2#1111110001001001, 16#9FA4.

UINT is the abbreviation of the Unsigned INTeger format (encoded in 16 bits). The upper/lower limits are as follows: 0 to (2 to the power of 16) - 1.

0, 65535, 2#1111111111111111, 8#177777, 16#FFFF.

UDINT is the abbreviation of Unsigned Double INTeger (encoded in 32 bits). The upper/lower limits are as follows: 0 to (2 to the power of 32) - 1.

0, 4294967295, 2#11111111111111111111111111111111, 8#37777777777, 16#FFFFFFFF.