Danfoss MCO 305, Design Manual, Page: 113 / 242

MCO 305 Design Guide
__ Software Reference __
MG.33.L4.02 – VLT
®
is a registered Danfoss trademark
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GET
Summary Reads a parameter
Syntax res = GET par
Parameter par = parameter identification
Return Value res = parameter value
Description Reads the value of a parameter, a MCO 305 parameter, or an application para-
meter.
Parameters are addressed with a code, for example KPROP for the Proportional
Factor, or POSERR for the Tolerated Position Error
.
A complete list of the codes can
be found in the Parameter Reference.
Application parameters are addressed with a number of group 19-**. See also the
parameter reference for details.
Command Group PAR
Cross Index SET, GETVLT, SETVLT, LINKGPAR,
Parameter Reference
Syntax Example PRINT GET POSLIMIT /* Print-out positive positioning limit */
posdiff = GET POSERR /* Read actual setting tolerated position error */
PRINT GET I_FUNCTION_9_4 /* reads input 4 for abort */
Program Sample GETP_01.M
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GETVLT
Summary Reads a VLT parameter
Syntax res = GETVLT par
Parameter par = parameter number
Return Value res = parameter value
Description GETVLT reads parameters and return the corresponding value. Thus, with GETVLT
you have access to the operating data (e.g. motor current 1-24) or to the configu-
rations (e.g. max. reference par. 3-03) of the FC 300.
Since only integer values are transmitted, it is necessary to take the conversion
index into consideration when evaluating the return value.
Thus an LCP value of 50.0 Hz (par. 16-13 conversion index = –1) is equivalent to a
return value of 500.
The list of FC 300 parameters with their respective conversion index can be found
in the FC 300 Operating Instructions.
NB!:
Use GETVLTSUB to read parameters with index numbers, for example FC 300
parameter 5-40.
Command Group PAR
Cross Index SETVLT
Syntax Example PRINT GETVLT 4-13 /* reads par. 4-13 motor speed high limit */