Servodrive Parameters: IDN_US and IDN

Description

These parameters are associated with units and scale factors.

They enable you to directly control the servodrives by the project (independently of the TSX CSY 84 module).

They can be divided into two categories:

IDN_US deemed user standards (Standard SERCOS®), See (Standard SERCOS Identification Numbers (IDN)),
IDN_UP deemed user owners (specific to servodrive constructors, see information on drives).

NOTE: This manufacturer information should specify:

whether the parameter has units,
the SERCOS® loop phase in which the parameter is authorized,
the legal values of the parameter,

The information in the servodrive manual on how the parameter is scaled and how the units are determined is not applicable in this case. The movement controller will convert the parameter using the information supplied by the servodrive.

Associated Functions

The associated functions of this parameter are:

GetIDN_US and GetIDN_UP which send a read request of the current parameters with the identification numbers (IDN) SERCOS®) in the form of a floating point number which has been converted from drive units into default axis units.
SetIDN_US and SetIDN_UP which send a write request of the new parameters with the SERCOS® identification numbers (IDN)) in the form of a floating point number expressed in default axis units for this parameter. The movement controller converts this data value from default axis units to the drive units and writes the converted value to the servodrive.

NOTE: (IDN) SERCOS®: S-0-xxxx (standard parameters) and P-0-xxxx (product specific parameters) respectively

NOTE: These functions do not let you access SERCOS® parameters which do not have units or variable length text parameters.

NOTE: These parameters can also be read/written by the Get/SetIDN_S or Get/SetIDN_P functions, so it is necessary to watch the units that are used.

These functions use the WRITE_CMD instruction.

Language Objects

The table below presents the different language objects linked to the OpticalPower parameter.

Object	Name	Function code	Instruction type	Description
%MWr.m.c.26	ACTION_CMD	1558	WRITE_CMD	Read request IDN_US
%MWr.m.c.26	ACTION_CMD	2558	WRITE_CMD	Write request IDN_US
%MWr.m.c.26	ACTION_CMD	1559	WRITE_CMD	Read request IDN_UP
%MWr.m.c.26	ACTION_CMD	2559	WRITE_CMD	Write request IDN_UP
%MFr.m.c.22	RETURN_CMD_2	-	-	Read report: Value (1) of the floating point parameter.
%MDr.m.c.27	PARAM_CMD_1	-	-	IDNSercos. Format type of 1 to 4095. However, use of the bits 12 to 14 is allowed. These bits indicate which parameter sets are being selected. (See your servodrive manual to find out what parameter sets are supported
%MFr.m.c.31	PARAM_CMD_3	-	-	AddressSercos. This parameter is required if you are using the GetIDN function on the BusSERCOSaxisID 999.
%MFr.m.c.33	PARAM_CMD_4	-	-	Contents of the variable: Value (1) of the floating point parameter.
%MWr.m.c.19	ERROR_CMD	-	-	Error report. See (WRITE_CMD Command: Programming Errors)

Legend
(1)	This value is expressed in default axis units for this type of parameter (e.g. units of position, speed, acceleration, torque and time),