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Ethernet/IP VIM Firmware v3.4.3 Release Notes
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Product: DeltaV Virtual IO Module - VIM2

These release notes are for Ethernet/IP VIM Firmware v3.4.3.

These release notes are for changes made to the Ethernet/IP VIM firmware for v3.4.3. The previous general released firmware version is v3.4.1. The flash procedure is documented in the product manual.

Who should upgrade?

This firmware release is MANDATORY for all Ethernet/IP VIM users at or prior to firmware v3.3.64.

What's new in this release?

The following defects were corrected:

Error reading string data from SLC devices.

On read requests, the SLC returns an incorrect string as part of the response. The issue is that for concatenated
strings where the resulting string is smaller in size than the previous, leftover characters from the previous string
are also transmitted.

For example, the following string contains a number of concatenated substrings:


If the last substring 123456 is replaced with abc, the new string in the PLC is as follows:


However, the string transmitted to the VIM is as follows:


This defect has been correct by using the transmitted sting length to determine where the transmitted string ends.

The following enhancements were implemented:

Default Gateway Support

Default Gateway support has been added to the VIM functionality. By using a router, the VIM can access devices on another network. This functionality is supported in both Simplex and Redundant modes, and is configured as part of the VIM properties.

Note: VIMNet Explorer v9.1.3.9 or later is required. If the Gateway field is disabled in the VIM properties dialog, you can enable it in the Registry by adding the following key. After adding the key, restart the VIMNet Explorer. The key is EnableDefaultGateway, DWORD, with a value of 1. The key path: My Computer\HKEY_CURRENT_USER\Software\Mynah Technologies\PPV\Settings


Please contact us for any questions about these release notes at:


MYNAH Technologies

390 South Woods Mill Road, Suite 100
Chesterfield, MO 63017
+1.636.728.2000 (voice)
+1.636-728-2001 (fax)