Opto 22

43044 Business Park Drive, Temecula, CA 92590 USA
Local & outside the USA:(951) 695-3000
Toll-Free within the USA:(800) 321-6786
Fax: (951) 695-3095
Email: sales@opto22.com
 
KB84980
SoftPAC: UDP broadcast fails with -444 error message
Revision:  2.0
Published:  4/7/2017
Applies To
PAC Firmware for:
SOFTPAC
Versions
Versions affected:  
All versions of PAC firmware through R9.5d
Problem is fixed in version:  
FW R9.5e

SYMPTOMS

Note: This issue affects only SoftPAC, and only when using UDP communication handles set to a broadcast address.*

Sending any of the following commands using SoftPAC and a UDP communication handle set to a broadcast address results in a -444, "Error on socket send" message.
  • Transmit Character
  • Transmit NewLine
  • Transmit Numeric Table
  • Transmit Pointer Table
  • Transmit String
  • Transmit String Table
  • Transmit/Receive String

*A broadcast address is used to send messages to all hosts on the specified network.

WORKAROUND

Before transmitting the message, use the set.dst ("set destination") command with Send Communication Handle Command to specify the broadcast address.

All messages will be sent to the specified broadcast address until you change the address with another set.dst command.

For example, the following command sets the destination for messages to port 2001 on all the hosts on network 10.20.30.

nUDPBroadStatus = SendCommunicationHandleCommand(
  chUDP_MMPComms,
  "set.dst:10.20.30.255:2001" );

RESOLUTION

Opto 22 has resolved this issue.

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

DISCLAIMER

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.

OPTO 22 DOES NOT WARRANT THE COMPLETENESS, TIMELINESS, OR ACCURACY OF THE DATA CONTAINED IN THIS OPTOKB ARTICLE AND MAY MAKE CHANGES THERETO AT ANY TIME AT ITS SOLE DISCRETION WITHOUT NOTICE. FURTHER, ALL INFORMATION CONVEYED HEREBY IS PROVIDED TO USERS 'AS IS.' IN NO EVENT SHALL OPTO 22 BE LIABLE FOR ANY DAMAGES OF ANY KIND INCLUDING DIRECT, INDIRECT INCIDENTAL, CONSEQUENTIAL, LOSS PROFIT, OR DAMAGE, EVEN IF OPTO 22 HAS BEEN ADVISED ON THE POSSIBILITY OF SUCH DAMAGES.

OPTO 22 DISCLAIMS ALL WARRANTIES WHETHER EXPRESSED OR IMPLIED WITH RESPECT TO THE INFORMATION (INCLUDING HARDWARE, SOFTWARE, AND/OR FIRMWARE) PROVIDED HEREBY, INCLUDING THE IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTIBILITY, AND NON-INFRINGEMENT. Note that certain jurisdictions do not sanction the exclusion of implied warranties: thus, this disclaimer may not apply to you.

Copyright © 2017 Opto 22. All rights reserved.

My.Opto22

All Opto22

Request Information
  • FREE Product Brochure
  • Product Demonstration
  • PreSales Engineering Assistance

Opto 22 Product Support

Opto 22 Product Support is FREE Monday through Friday 7 a.m. to 5 p.m. Pacific Time

Product Support Numbers:

Local: (951) 695-3080
Toll-Free: (800) 835-6786
Fax: (951) 695-3017
support@opto22.com

Products

None

Downloads

None

Documents

None