Rockwell Automation DAG6.5.8 APPLICATION GUIDE SCADA SYSTEM - Manual (Page 174)

Publication AG-UM008C-EN-P - February 2005
4-36 Configuring SLC 5/03, 5/04, and 5/05 Processors
2. See Table 4.10 for details
concerning the DF1
Full-Duplex Channel Status
Screen.
Table 4.10 Understand The DF1 Full-Duplex Status Screen Fields
Status Field Diagnostic File Location Definition
DCD Recover word 11 The number of times the processor detects the DCD handshaking line has
gone low to high
Messages Sent word 1 The total number of DF1 messages sent by the processor (including
message retries)
Messages Received word 2 The number of messages received with no errors
Inquiry Received word 6 The number of ENQs received by the processor
Received NAK word 5 The number of NAKs received by the processor
Lack of Memory/Sent NAK word 8 The number of times the processor could not receive a message because
it did not have available memory
Lost Modem word 12 The number of times the lost modem bit has gone low to high
Undelivered Messages word 3 The number of messages that were sent by the processor but not
acknowledged by the destination device
Duplicate Messages
Received word 9 The number of times the processor received a message packet identical
to the previous message packet
Inquiry Sent word 4 The number of ENQs sent by the processor
Bad Packet/No ACK word 7 The number of incorrect data packets received by the processor for which
a NAK was returned
DTR (Data Terminal Ready) word 0;bit 4 The status of the DTR handshaking line (asserted by the processor)
DSR (Data Set Ready) word 0;bit 2 The status of the DSR handshaking line (received by the processor)
RTS (Request to Send) word 0;bit 1 The status of the RTS handshaking line (asserted by the processor)
CTS (Clear to Send) word 0;bit 0 The status of the CTS handshaking line (received by the processor)
DCD (Data Carrier Detect) word 0;bit 3 The status of the DCD handshaking line (received by the processor)