Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual page 514

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514 Protocol Configuration
Double-click on the Channel Status
Icon Located beneath the
Configuration icon to bring up the
Channel Status screen.
Communication Status Function DF1 Half-Duplex Master Channel Status
Status Field
Status File Location
Messages Sent CSx:10
Messages Received CSx:11
Polls Sent CSx:15
Lack of Memory CSx:17
Last Normal Poll List Scan CSx:19
Last Priority Poll List Scan CSx:21
Message Retry CSx:13
Undelivered Messages CSx:12
Duplicate Messages CSx:18
Received
Bad Packets Received CSx:16
Max Normal Poll List Scan CSx:20
Max Priority Poll List Scan CSx:22
RTS (Request to Send) CSx:9/1
CTS (Clear to Send) CSx:9/0
DCD (Data Carrier Detect) CSx:9/3
(1) x equals the Channel number.
Publication 1763-RM001C-EN-P - October 2009
DF1 Half-Duplex Master Channel Status
Channel Status data is stored in the Communication Status Function File.
Viewing Channel Status Data for DF1 Half-Duplex Master
(1) Definition
The total number of DF1 messages sent by the processor
(including message retries)
The number of messages received with no errors
The number of poll packets sent by the processor
The number of times the processor could not receive a message because
it did not have available memory
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 message retries sent by the processor
The number of messages that were sent by the processor but not
acknowledged by the destination device
The number of times the processor received a message packet identical
to the previous message packet
The number of incorrect data packets received by the processor for which
no ACK was returned
Maximum time in 100 ms increments to scan the Normal Poll List
Maximum time in 100 ms increments to scan the Priority Poll List
The status of the RTS handshaking line (asserted by the processor)
The status of the CTS handshaking line (received by the processor)
Reserved