Setup guide

Chapter 2 System Objects
Object Reference Manual 3-40 www.Automationdirect.com
Select either the DirectNET or K-Sequence protocol. If during the previous
step you selected one of the families listed, the highlight bar will be on a
valid protocol for that family of PLC. The choice of protocol to use will
depend on two factors:
• Whether or not the PLC you are connected to supports the protocol on
the port where the cable is connected. For a listing of protocols
available on each port of DirectLogic compatible PLCs see the
Protocol Reference Chart in the Creating and Managing
Communication Links chapter within the LookoutDirect Learning
Guide. This chart is also available in the DirectSoft Communications
Server Help that can be accessed by clicking on the Link Editor button
the clicking on the Help button.
• If you need to perform write operations to individual Discrete I/O
points or control relays, then you must select K-sequence protocol.
DirectNET protocol cannot write to individual bit locations.
If the PLC has been configured to a node Address other than 1, enter that
address now. Click on the Next button when you are finished.
The DirectLogic driver object will now attempt to establish a
communication Link with the PLC using the node address and protocol you
have selected. It will try the combination of 9600 Baud, and Odd Parity
first. If this combination is unsuccessful, an ‘auto-bauding’ sequence will
be used to try and determine the correct baud rate and parity combination.
If these attempts are unsuccessful, the following dialog is displayed. You
can click the Link Editor button and manually attempt to adjust the port