Omron ETHERNET DIRECT DR 170 14 - Manual (Page 55)

Klinkmann Automation Omron Ethernet DAServer 53
Omron Ethernet DAServer Ver 1.x User Manual Rev 1.4 17014m14
CHAPTER 5
Troubleshooting
This chapter describes the troubleshooting tools you can use to deal with the Omron
Ethernet DAServer problems you may encounter.
The DAServer Manager provides access to diagnostics and other statistical data, and the
Log Viewer provides access to event messages logged during the operation of a
DAServer. Also, your client (for example, InTouch) can monitor connectivity with the PLC
through the $SYS$Status item. Use these tools together with the following information to
troubleshoot your Omron Ethernet DAServer.
Note: In order to determine the version of your DAServer, perform the following steps.
Search for DASOmronEth.dll, right-click on the File Name, select Properties on the
shortcut menu, and select the Version tab on the Properties dialog box. The version of
your DAServer is listed under File Version.
Contents
• Monitoring Connectivity Status with the PLC
• Monitoring the Status of DAS Conversations
• Error Messages and Codes
Monitoring Connectivity Status with the PLC
The built-in discrete item, $SYS$Status, can be used to monitor the status of
communications with the PLC. This item is set to:
• 0 (zero) when communications with the PLC fails.
• 1 (one) when communications is successful.
Note: For DDE/SuiteLink clients, $SYS$Status always comes from the leaf level of a
DAServer hierarchy branch, which is the destination PLC node. For OPC clients,
$SYS$Status can be accessed at all hierarchy levels. $SYS$Status at the root level of
the whole hierarchy tree is always good, as it represents the quality status of the local
computer itself. Hence, for practical application, OPC clients should reference
$SYS$Status at any hierarchy levels other than the root.
Enter the following DDE reference formula in the appropriate place in your client:
=DASOmronEth|PLC!$SYS$Status
where:
DASOmronEth is the name of the DAServer application.
PLC is the exact device group defined in the DAServer for the PLC.
$SYS$Status is the discrete item used to monitor the status of connectivity with the PLC.
Enter the following OPC item reference syntax when adding the item in your OPC client:
YourOPCAccessPath.$SYS$Status
where: