Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C Frame) - Classic Control - Manual (Page 195)

Operator Interface 3-73
7000 “C” Frame 7000L-UM300I-EN-P – June 2013
Advanced Screen Operations
A number of advanced functions have been incorporated into the
operator interface. These operations are not required to operate the
drive. They are meant as service tools for trained technicians and
have been included here only for completeness.
All operations are accessed via a two key sequence.
Communications Statistics
The screen, depicted in Figure 3.98 shows statistics involving the
serial communications between the operator interface and the drive
as well as the contents of the transmit and receive buffers. It is
called from any screen (except the PRINTER screen), by pressing
the [F10] key and the [cursor down] key at the same time.
Figure 3.98 – Communications Statistics & Buffer
The ERRORS show the number of occurrences of a particular error
since the last time the counters were reset.

Parity: number of parity errors in characters received.

Framing: number of framing errors in the characters received.

Overrun: number of characters received that were not read prior
to accepting the next character.

Resends: number of times the operator interface had to resend
data due to a NACK being sent by the drive.

Timeouts: number of times the operator interface did not
receive data from the drive within a specified time period.

Chksum: number of times the operator interface detected a
checksum error in the data it received from the drive.

Discard: number of characters discarded by the operator
interface, as they were not what was anticipated.

Control: number of control codes that did not conform to the
anticipated ACK or NACK. The operator interface will have
assumed ACK, which if wrong will result in a time-out error.

Seqnce: number of responses from the drive that did not
correspond to the last request sent.