Df1 Half-Duplex Master Channel Status - Allen-Bradley SLC 500 Series Reference Manual
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Table of Contents
13-68
SLC Communication Channels
See Table 13.21 for details concerning
the DF1 Half-Duplex Master Channel
Status Screen.
Table 13.21 SLC 5/03 and Higher Channel 0 DF1 Half-duplex Master Channel Status
Status Field
DCD Recover
Messages Sent
Messages Received
EOT Received on First Poll
Last Normal Poll List Scan
Last Priority Poll List Scan
Lost Modem
Publication 1747-RM001G-EN-P - November 2008
DF1 Half-duplex Master Channel Status
Channel Status data is stored in the diagnostic file defined on the Channel 0
Configuration screen. See Table 13.21 on page 13-68 for information
regarding the diagnostic counter data displayed.
Double-click on the Channel Status
Icon Located beneath the
Configuration icon to bring up the
Channel Status screen.
Diagnostic File Location
word 11
word 1
word 2
word 8
word 5
word 10
word 12
Definition
The number of times the processor detects the DCD handshaking line has
gone low to high
The total number of DF1 messages sent by the processor (including
message retries)
The number of messages received with no errors
Not implemented
Time in 100 ms increments of last scan through Normal Poll List
Time in 100 ms increments of last scan through Priority Poll List
The number of times the lost modem bit has gone low to high
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