Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) - Manual (Page 248)

248 Rockwell Automation Publication 7000-UM151E-EN-P - January 2013
Chapter 5 Drive Programming and Parameters
Advanced Screen
Operations
There are a number of advanced functions built into the operator interface that
are not required to operate the drive. They are meant as service tools for trained
technicians and are included here only for completeness.
All operations are accessed via a two-key sequence.
Communications Statistics
Figure 241 - Communications Statistics & Buffer
Figure 241 shows statistics for serial communications between the operator
interface and the drive, and the Transmit (TX) and Receive (RX) buffers’
contents. Call the statistics function from any screen (except PRINTER) by
pressing [F10] +
▼
simultaneously.
Figure 242 - Communications Statistics & Buffer
ERRORS indicate the occurrences of a particular error since the last time you
reset the counters.
• 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.