The Leader in Industrial Data Communication Solutions

1. The Leader in Industrial Data Communication Solutions Training: AB Application Interfacing

2. Section: Application Level

3. Wireless NetLinx Solutions NetLinx • Rockwell’s NetLinx architecture features seamless communications between: • Ethernet/IP • ControlNet • DeviceNet • NetLinx supports: • Configuration (programming) • Control • Data collection

4. Wireless NetLinx • Wireless Ethernet modems integrate seamlessly into NetLinx networks • All NetLinx functions supported over wireless • Throughput & data latency considerations • NetLinx wireless Ethernet applications • CIP • Explicit messaging • Implicit messaging

5. Wireless NetLinx Example RSLinx Servers Remote HMI Workstations Remote Controller Wireless NetLinx Remote Workstation ControlLogix ControlLogix ControlNet HMI DeviceNet DeviceNet Analog I/O Sensor Drive1

6. Data is exchanged using MSG read/write instructions For best operation MSG instructions should be in the Control Room ladder NetLinx Explicit Messaging

7. Ethernet Remote IO Each remote chassis requires 70Kbits/sec (radio network offers 100Kbits/sec). The transfer car operates poorly with significant delay. Why? Reason: The ethernet switch and radio filter cannot block implicit remote IO traffic from the Build Area so is getting into the RF and consuming bandwidth. Fix: Use a switch that supports IGMP snooping. NetLinx Implicit Data Exchange

8. DF1 Wireless • Wireless modems provide full support for DF1 protocol • Simple, no handshake interface for all applications • Operate identical to documented configuration and programming examples • May be used with –KE, -KF2, -KF3, AIC, netENI, netDNI and other DF1 interfaces for RTU interfacing or network bridging

9. DF1 Point to Point RS232 “Channel 0” DF1 Full Duplex Mode

10. Tank 1 DF1 Polling Master Tank 2 Pump Stations DF1 Multipoint • Note: A DF1 master provides data forwarding such that slave to slave communications is permitted.

11. DF1 Protocol over DH485 Network

12. Regional Two Tiered Network

13. Channel Pass-Through • SLC5/x processors offer channel pass-through. In the prior example all tier two equipment is directly accessible via Ethernet

14. Example: DF1 Radio Modem Protocol

15. Design Tip – DF1 • A “Missing Remote” causes other DF1 nodes to fail. This is due to ladder logic design. • Don’t do this: • Reason: with SLC or MicroLogix multiple enabled MSGs are queued in the CH0 message buffer. While queued their Timeout interval is timing. If the current MSG times out others queued will also timeout.

16. Design Tip – DF1 • Enable one CH0 MSG at a time and when it’s complete, enable the next. • One method:

17. Design Tip – DF1 Polling Master Driver The parameters Max Pkt Wait Time (Sec) and Max Retransmission Wait Time (Sec) and not well documented. Values that work well: • Max Pkt Wait Time: 8 (default 150) • Max Retransmission Wait Time: 15 (default 600)

18. Design Tips – Logix Platforms • Logix Platforms • These machines can REALLY move ethernet data and quickly overwhelm a radio network. As always, do not exceed the network’s throughput capability. • Be mindful of RPI. Ten 32 bit words with an RPI of 10 milliseconds is 32kbps without even considering protocol overhead.

19. The Leader in Industrial Data Communication Solutions