Rockwell Automation DAG6.5.8 APPLICATION GUIDE SCADA SYSTEM - Manual (Page 247)

Publication AG-UM008C-EN-P - February 2005
Configuring Logix Controllers 7-21
1. To bring up the Controller Tag
interface, click once on the
Controller Tag icon.
Table 7.7 DF1 Half-Duplex Slave Diagnostic Counters
Status Field Diagnostic Tag Array
Location Definition
signature (66
10
) word 0 DF1 Half-duplex Slave is the configured protocol.
DTR (Data Terminal Ready) word 1;bit 4 The status of the DTR handshaking line (asserted by the controller)
DCD (Data Carrier Detect) word 1;bit 3 The status of the DCD handshaking line (received by the controller)
DSR (Data Set Ready) word 1;bit 2 The status of the DSR handshaking line (received by the controller)
RTS (Request to Send) word 1;bit 1 The status of the RTS handshaking line (asserted by the controller)
CTS (Clear to Send) word 1;bit 0 The status of the CTS handshaking line (received by the controller)
packets sent word 2 The total number of DF1 packets sent by the controller (including
message retries)
packets received word 3 The number of packets received with no errors
undelivered packets word 4 The number of packets that were sent by the controller but not
acknowledged by the destination device
messages retried word 5 Defines the number of times a slave station retries a message before it
declares the message undeliverable.
NAKs received word 6 The number of NAKs received by the controller
poll packets received word 7 The number of poll packets received by the controller
2. For details of the
Diagnostic Counter
files, see Table 7.7.