New VIM firmware version that brings improvements in performance
Improvements:
- Modified connection method to not use an ICMP ping before the connection attempt. Instead, the connection attempt is started and a 15-second timeout is asserted. This new method optimizes connecting to field devices, particularly in redundant systems.
- Streamlined and optimized VIM/VIM communications for faster data exchange.
- Modified redundancy switchover status reporting to DeltaV. Furthermore, this change improves switchover time.
Resolved Issues:
- Modified receive handling of 6-byte ModbusTCP message header in case field device does not send all 6 bytes at once. Previously, if the VIM did not receive all 6 bytes, it discarded all already received bytes and started afresh receive. This caused a communication loss and inability to communicate with the field device. This correction overcomes the field device limitation where the response message is sent in small fragments.
- Modified dataset error reporting so that an error is asserted only if both connections in a dual IP redundant system are down. An error is not asserted if one connection is down and the second is active.