Omron DR 170 14 manual To delete device groups, To configure default update intervals

Klinkmann Automation Omron Ethernet DAServer 30

changed in the following sequence: DM0, 500R, DM1, 502R, DM2, ... then DAServer creates a separate write message for each new write value.

If Any Msg Multiple Write option is checked, DAServer tries to include the new write value into any of previously created messages ignoring the sequence of data changing in the client application.

Important! With this option maximum writing speed is achieved, but this option is not recommended if data changing sequence is important for PLC program!

To delete device groups

Deleting a device group from the list can be performed as follows:

1.Right-click on the device group to be deleted.

2.Select the Delete command from the shortcut menu.

Note: When you select another part of the Omron Ethernet DAServer tree hierarchy, you are prompted to save the modifications to the configuration set.

To configure default update intervals

1.To configure a default update interval for the object, right-click in the Device Groups box.

2.Select Config Default Update Interval from the shortcut menu.

To edit update intervals

•To edit the update interval for an object, double-click its value in the Update Interval column and make the edit.

•Update Interval is the frequency (in milliseconds) that the DAServer acquires data from the topics associated with that device group.

•Different topics can be polled at different rates in a PLC by defining multiple device- group names for the same PLC and setting a different Update Interval for each device group.

Note: When you select another part of the Omron Ethernet DAServer tree hierarchy, you are prompted to save the modifications to the configuration set.

Scan-Based Message Handling

DAServers are based on the concept of polling a hardware device for information. This polling is driven by a need which is expressed in the form of requests from one or more clients. Once a particular piece of information has been requested by a client, the DAServer formulates its own request and sends that request to the hardware device. The DAServer then waits for a response to its request. Once the information has been received, the DAServer passes that information back to the client, and repeats the process until all clients have ceased requesting information.

The rate at which the DAServer will poll a particular device for a specific piece of information is defined in the device group (topic definition) inside the DAServer, using a parameter called the Update Interval. When setting this parameter, there is always a trade-off between the update speed of the device group and the resulting decrease in system responsiveness.

Omron Ethernet DAServer Ver 1.x User Manual Rev 1.4 17014m14