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KB83798
Improperly formed Ethernet connection string may prevent opening a connection to the host port
Revision:  1.0
Published:  8/25/2014
Applies To
SNAP-PAC-S1
SNAP-PAC-S1-FM
SNAP-PAC-S1-W
SNAP-PAC-S2
SNAP-PAC-S2-W
SNAP-PAC-R1
SNAP-PAC-R1-FM
SNAP-PAC-R1-W
SNAP-PAC-R2
SNAP-PAC-R2-FM
SNAP-PAC-R2-W
SOFTPAC
Versions
Problem affects versions:  
Firmware R9.2c through R9.4a
Problem is fixed in version:  
R9.4b

SYMPTOMS

In the PAC Control command Open Outgoing Communications, if you specify an incorrectly formatted connection string (for example, tcp::pppp where pppp is a TCP port number), a -70 will be returned, and the socket the call attempted to open will become permanently unavailable for use.

Once all available sockets have been rendered unusable by this problem, an error -49 (No More Streams) will be returned, and it will not be possible to make any new Ethernet connections (user or host).

RESOLUTION

Opto 22 has resolved this issue.

WORKAROUND

Make sure the Ethernet connection string is correct before using it in the command Open Outgoing Communications.

If you have already run into this issue, reset or cycle power on the controller.

Alternatively, you can put PAC Manager into UDP (connectionless) mode and reboot that way. This can be helpful if you are not physically near the PAC. To make PAC Manager use UDP rather than TCP, create a text file containing only the letters udp. Save this file with the name options.def and place it in the folder where your PAC Manager exe is, for example, C:\Program Files (x86)\Opto22\PAC Project 9.3\Manager.exe. Close and re-open PAC Manager, and it will use UDP.

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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