Rockwell Automation DAG6.5.8 APPLICATION GUIDE SCADA SYSTEM - Manual (Page 169)

Publication AG-UM008C-EN-P - February 2005
Configuring SLC 5/03, 5/04, and 5/05 Processors 4-31
Clicking the Clear button while monitoring Channel Status of either
channel 1 or channel 0 online, resets all of the channel status
diagnostic counters for both channels to zero.
Configuring the Store & Forward Table
The Store & Forward Table occupies status file words S:67 to S:82.
Each bit in this range corresponds to a DF1 Radio Modem node
address. In order to configure an SLC to Store & Forward message
packets between two other nodes, the bits corresponding to the
addresses of those two other nodes must be set. For instance, if node
2 is used to Store & Forward message packets between nodes 1 and 3,
then both bits S:67/1 and S:67/3 would have to be set in the Store &
Forward Table (see Figure 4.5). You can set bit 255 (S:82/15) to enable
Store & Forward of broadcast packets, as well.
Duplicate Messages
Received word 9 The number of times the processor received a message packet identical
to the previous message packet
Bad Packets Received word 7 The number of data packets received with transmission errors by the
processor
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)
Table 4.8 SLC 5/03 and Higher Channel 0 DF1 Radio Modem Channel Status
Status Field Diagnostic File Location Definition
IMPORTANT
Once Store & Forward is enabled, duplicate packet
detection is also automatically enabled. Whenever
Store & Forward is used within a radio modem
network, every node should have Store & Forward
enabled even if all of the bits in the file are cleared,
so that duplicate packets will be ignored.