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170LNT71000 Devicenet Communication Adapter Exec Upgrade to v.1.41

Release Notice

The purpose of this Resolution is to inform 170LNT71000 Devicenet Communication Adapter users that the Exec has been upgraded to version 1.41.

Goals and Symptoms

Version 1.41 firmware resolves the following 170LNT71000 issues:

  • 1) When operating in 'Polled Mode' and mounted on discrete input bases only, 170LNT71000 Devicenet Comm Adapters would drop off the network every 10 seconds. The adapters would remain off the network for approximately 0.5 second then recover on its own.

    2) The input data from a bidirectional module will freeze at their last value if an output fault (ie. shorted output) occurs. The user would have to remove the fault to continue to read inputs correctly.

    3) If bi-directional modules are configured for polled & strobed modes, their outputs would remain in their last state if:
    • the communications cable is removed from the adapter,
    • the PLC is stopped, or
    • the fieldbus power is turned off.

Causes and Fixes

The 170LNT71000 firmware is NOT field upgradable.

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