SIDirect Legacy object parameters

View or edit the SIDirect Legacy object

• Click the Legacy object. The Legacy Parameters configuration view appears.

  

  Edit the elements in the Parameters page as needed. Five of the six elements in the page are configurable.

  Note: The Legacy object is preconfigured with three Device Groups and a default network address. The default network address and preconfigured Device Groups are not present in Legacy objects ("New_Legacy_000") that you add.

• Processor Type (not configurable): S7 PLC.

• S7 Connection: This has three configurable settings:a

  • Network Address: The IP address or host name of the remote S7 CP.

    Enter network address where the PLC is located (for example, "10.11.12.13"), or a host name if one is defined in the local hostlist. The address field cannot be blank and the IP address or host name cannot be more than 255 characters.

    Note: The preconfigured Legacy object includes a default network address: "1.1.1.1". Any additional Legacy objects that you add do not contain the default address (network address is blank).

  • Local TSAP: The local TSAP of the computer. Select the Hex numbers for the connection resources from the menu. The Local TSAP consists of two (2) Hex numbers. The first number corresponds to the connection resource. Each number ranges from 00 to FF. The default values are 01 and 00, respectively.

  • Remote TSAP: This Remote TSAP corresponds to what you configured in the TSAP for the S7 CP. Configure the Remote TSAP by typing in the decimal numbers for the Remote Rack and Remote Slot, and by selecting the Hex number for the Connection Resource from the menu. The values for the Remote Rack No. and Remote Slot No. range from 0 to 255, with the default values of 0 and 3, respectively. The value for the Connection Resource ranges from 00 to FF. The default value is 03.

• PLC Connectivity: The watchdog scheme for detecting the connectivity status to the PLC when there are no activities (no items are subscribed to).

  • Select the Verify connectivity when no item is subscribed check box to turn on the watchdog.

  • Specify the watchdog time interval, in seconds, in the Frequency in seconds to verify the PLC connectivity box.

• Reply Timeout: Enter a value, in milliseconds, beyond which messages time out.

  • Allowable range is 0 to 100,000 milliseconds.

  • The default value is 15,000 milliseconds. If you decrease this value, the SIDirect Communication Driver reacts faster to a communications failure.

• Connection Timeout: Enter a value, in milliseconds, beyond which a pending request to initiate a connection times out.

  • Allowable range is 0 to 100,000 milliseconds.

  • The default value is 30,000 milliseconds.

• Alarms and Events: Enable Alarms or Events or disable both for this connection by selecting:

  • Disable all

  • Enable alarms

  • Enable events

    On any one connection, you can configure Alarms, Events, or none. If you need to access both Alarms and Events, create two different connections.

• Use PLC Alarm Time: The alarm time in the PLC used to timestamp alarm and event-related data.

  You can enable this feature to time stamp data in the alarm and event blocks with the timestamps provided in the alarm and event blocks. The Communication Driver, in this case, will not generate its timestamp for the received data. This feature is only available for data in the alarm and event blocks.

• Time Difference Between the PLC Time and the UTC: The time difference, in hours, between the PLC time and the UTC time.

  • The value range is from +12 hours to -12 hours.

  • The default value is 0.