SoftLC now supports DHCP address assignments

Last update on Sept. 5, 2015.

SoftPLC’s networking now can support DHCP as an alternative to BOOTP and static IP addresses.

To use a DHCP client on any SoftPLC ethernet interface, just have the line in NETWORK.LST say:

ETH DHCP

That’s it!  The DHCP server should establish the GATEWAY and the DNS settings, the values in NETWORK.LST will be ignored if DHCP is set for an interface.

This support is for SoftPLC versions 4.6 and later.  Contact technical support (support@softplc.com) for more information.

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Upgrade A-B PanelView, Drives & More

Last update on Sept. 5, 2015.

July 2012 Newsletter Feature Article:

Attention PLC-5, SLC-500, PLC-2 and other A-B PLC/PAC Users of Remote I/O “blue hose":

SoftPLC provides easy, low cost upgarde solutions to replace drives, PanelViews & other A-B RIO devices - with no PLC changes required.

Then, over time, you can use the same Gateway to migrate the PLC, I/O, and more to a modern solution.

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Enhanced ONE Communication Drivers

Last update on Sept. 5, 2015.

Smart SoftPLC now includes support for SLC-500 commands in the DF1 and Ethernet drivers.

This means HMI’s that support SLC-500, but not PLC-5, now have improved communications to the Smart SoftPLC. Added commands are:

Protected Typed Logical Read with 3-Address Fields
Protected Typed Logical Write with 3-Address Fields
Protected Typed Logical Masked-Write with 3-Address Fields
Protected Typed Logical Read with 2-Address Fields
Protected Typed Logical Write with 2-Address Fields

Contact support@softplc.com for firmware updates or more information.

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June 2012 Newsletter Published

Last update on Sept. 5, 2015.

Smart Protocol Gateways

  • Mix/match multiple protocols
  • Virtually unlimited data words
  • Fast throughput, diagnostics, security
  • User logic for data logging/scaling, alarms & more

Application Story - Automotive Stamping Gateway

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March 2012 Newsletter Published

Last update on Sept. 5, 2015.


  • SMS Read/Write Ladder Instructions
  • New Products - Low Cost, Rugged Cell Modems
  • Application Story - Flawless PLC-5 Migration

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A-B PLC Migration/Upgrade Video

Last update on Sept. 5, 2015.

This short video details how easy and low-risk upgrading older A-B PLC CPU’s can be, when the new controller is a SoftPLC programmable automation controller!

For more details, visit this page.

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January 2012 Newsletter Issued

Last update on Sept. 5, 2015.


  • Allen-Bradley PLC Migrations - Low Risk, Low Cost
  • TOPDOC NexGen Downloadable Demo

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SoftPLC Version 4.6 /TOPDOC Version 1.6 Now Available

Last update on Sept. 5, 2015.

We’re excited to announce the release of the x.6 versions of SoftPLC and TOPDOC. 

TOPDOC version 1.6 provides a number of new features, including:

  • Added GUI Smart Tealware I/O configuration editor
  • Added GUI Modbus Master/Slave serial configuration editors
  • Enhanced ModbusTCP configuration editor to support Smart Adapters
  • Updated Detect On Net to recognize Ethernet I/O adapters and display their TCP/IP addresses
  • PLC Configuration “Define” supports selection of all SoftPLC models

SoftPLC version 4.6 is a major upgrade that also includes a major upgrade to Gatecraft Linux (the operating system on your SoftPLC’s ...

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