6 reading values from vtac 7 registers, 7 resetting faults, 8 priority of nciminouttm and ncisendhrtbt – Rockwell Automation 2LW3000 LonWorks Communication Option Module for VTAC 7 Drives User Manual

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Conditions Required for Operation

8-3

8.6

Reading Values from VTAC 7 Registers

The address set in nciRdReg is polled and the result is written to nvoParam as often
as the value on the address changes or the work load on the host application and
nciMinOutTime allows.

8.7

Resetting Faults

If an error occurs, the drive faults. The fault can be reset from the LonWorks module
by first removing the cause of the fault, then setting nviObjRequest to
RQ_CLEAR_ALARM. All drive-related NCIs will be updated with the current drive
value.

8.8

Priority of nciMinOutTm and nciSendHrtBt

NciMinOutTm has priority over nciSendHrtBt. This means that heartbeats will not be
sent as often as specified in nciSendHrtBt if nciMinOutTm has a longer time set.

NciWriAddr

Address

NciWriAddr

nciWriValue

nviObjRequest

Result

159

Drop 1
Reg59

159

0

X

Network Inertia Comp Reg
Enable is set to 0.

157

Drop 1

Reg57(C)

157

0

Not

RQ_PROGRAM

For example:

RQ_NORMAL

Trim Ref Source is set to 0
but not read in by drive.
(Configurable parameter)

X

X

X

X

RQ_PROGRAM

All tunable parameters read
in by drive. All configurable
parameters read if drive is
stopped.

If (nciWriAddr >

X63) = X63

X63

X63

X

RQ_PROGRAM

Address written to with X.
LonWorks module takes
care of invalid values.

NCIRdAdr

Address

NvoParam

004

Drop0 Register 4

Value read at address

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