Opto 22

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KB53294
FactoryFloor controllers using ARCNet as host port, and booting into loader mode
Revision:  1.0
Published:  8/22/2006
Applies To
FactoryFloor Software- firmware loader
Versions
Problem was discovered in version:  
Loader version R4.0a
Resolution is included beginning in beta version:  
B4.0b

SYMPTOMS

Under very specific conditions, FactoryFloor controllers using ARCNet as the host port, could possibly not be initialized correctly and be unresponsive to applications such as OptoControl or OptoTerm.

CAUSE

The following symptoms must all be met for the controller to be unresponsive:

  1. The controller is powered down.
  2. The host port is set to ARCNet.
  3. When powering up the controller, it boots directly to the loader, either by a jumper setting or a corrupt kernel.

WORKAROUND

Two workarounds are possible:

  1. If the kernel is not corrupt, set the controller to Boot to kernel mode. To go to loader mode, use OptoTerm, Tools→Start Terminal, and issue the >Loader command from the >> prompt. The controller will go into loader mode.
  2. If the kernel is corrupt, set one of the serial COM ports as the host port and download a new kernel.

RESOLUTION

Opto 22 has resolved this issue and will include the fix in an upcoming release.

Relevant Downloads
No relevant downloads have been specified.
Questions? Contact Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com

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This Opto 22 Knowledge Base ('OptoKB') article is intended to provide general technical information on a particular subject or subjects and is not an exhaustive treatment of such subjects. Accordingly, the information in this OptoKB article is not intended to constitute application, design, software, or other professional engineering advice or services. Opto 22 may modify the OptoKB articles at any time. Before making any decision or taking any action which might affect your equipment, you should consult a qualified professional.

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