Siemens IP-Module Especificaciones descargar pdf (Pagina 73)

Siemens TCP/IP Ethernet Driver Help

Note:

No protocol or data access errors can occur for this operation.

See Also:

Error Codes

Unable to connect to device <device name>. Frame contains errors.

Error Type:

Warning

Result:

1. If tag is to be read in the process of connecting, and a device error (transport) occurred:

l If tag is a block tag, the entire block will be deactivated. All tags within that block will be deactivated.

This is signified by the postfix message "...Block Deactivated."

l If tag is an array tag or string tag, just this tag will be deactivated.

This is signified by the postfix message "...Tag Deactivated."

2. If tag is to be read in the process of connecting, and no device errors occurred:

l If tag is a block tag, the entire block will be invalidated. All tags within that block will be invalidated.

l If tag is an array tag or string tag, just this tag will be invalidated.

3. If tag is to be written in the process of connecting:

l Write operation for the given tag will not take place.

Possible Cause:

1. The TPDU response size is incorrect.

2. An unexpected frame was received. The response code may be incorrect.

3. The frame sequence is out of order.

4. The device's CPU work load is too high.

Solution:

1. Cable noise may cause distortion in the frame, resulting in erroneous data. It may also cause dropped

frames. Verify the cabling between the PC and the PLC's device.

2. Reduce network traffic. If this error occurs frequently, increase the Request Timeout and/or Fail After

attempt count.

3. If this error occurs frequently, decrease the tag group scan rate to reduce the work load on the PLC's CPU.

4. Increase the "Scan Cycle Load from Communication" and "Scan Cycle Monitoring Time".

See Also:

Error Codes

Unable to establish association with device <device name>. Device returned

protocol error [Class=<class>, Code=<code>].

Error Type:

Warning

Result:

1. If tag is to be read in the process of establishing an association, and a device error (such as transport or

protocol) occurred:

l If tag is a block tag, the entire block will be deactivated. All tags within that block will be deactivated.

This is signified by the postfix message "...Block Deactivated."

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