Parameter Access Error Codes; Parameter Access Command And Response Examples - Danfoss VLT 5000 Instruction Manual

In the event of an error message in response
Parameter
to a Parameter access command (see VLT
Access
Parameter Access), the VLT sends 0xff in value
Error Codes
Parameter
The examples below demonstrate use of the
parameter access command and parameter
Access
access response functions of the controller
Command
node. In the examples, the controller node has
and
a parameter access command SNVT_preset
Response
called nvoParamCmd and a parameter
Examples
access response SNVT_preset called
nviParamResp. In writing to the drive correctly,
the access response simply repeats the
entered data. In the event of an error, an error
code is displayed in value [3]. See Parameter
Access Error Codes above.
The controller node writes 30 seconds to
Example 1:
parameter 206 (205), Ramp time up of the
VLT. Conversion index is 0, so the conversion
factor is 1.0 (VLT 5000 conversion factor -2)).
The controller node access command sends
the following parameter write request to the
VLT.
VLT 5000 parameters are shown in parenthesis, where applicable.
MG.60.N1.22 - VLT is a registered Danfoss trademark
Exception Code Interpretation
1 Illegal function for the addressed node
2 Illegal data address (i.e., illegal parameter number)
3 Illegal data value
6 Busy
nvoParamCmd.learn=
LN_LEARN_CURRENT
nvoParamCmd.selector = 206
nvoParamCmd.value[0] = 0
nvoParamCmd.value[1] = 0
nvoParamCmd.value[2] = 0
nvoParamCmd.value[3] = 1E hex (30
decimal)
VLT ® 5000 / VLT
bit [0] and an error code in value [3]. Error
code definitions are presented in the table
below.

Parameter Access Error Codes

The controller node receives the following
parameter access response from the VLT.
® 6000 HVAC / VLT
Parameter 971 must be set to
STORE ACTIVE SETUP for
entering data values through
LonWorks parameter access
command in order to save
changes in drive. See parameter
971 in Parameter Descriptions
section of this manual.
NOTE
Consult conversion index in the
VLT Instruction Manual parameter
table for correct conversion
factor for reading and writing to
and from drive.
nviParamResp.learn =
LN_LEARN_CURRENT
nviParamResp.selector = 206
nviParamResp.value[0] = 0
nviParamResp.value[1] = 0
nviParamResp.value[2] = 0
nviParamResp.value[3] = 1E hex
nviParamResp.day = 0
nviParamResp.hour = 0
nviParamResp.minute = 0
nviParamResp.second = 0
nviParamResp.millisecond = 0
® 8000 AQUA
35