Download of LadderComOp 2.1.1 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the free program is Hakko Electronics Co., Ltd.
LadderComOp was developed to work on Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10 or Windows 11 and can function on 32-bit systems. LadderComOp lies within Development Tools, more precisely Distribution.
The following versions: 2.0 and 1.0 are the most frequently downloaded ones by the program users. The program's installer files are commonly found as LadderComOpEx.exe or SettingLadderComOP.exe etc. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
This application is required for PLC ladder transfer via USB or Ethernet.
When a V8 series is connected to the CPU port of a PLC, debugging has to be carried out by disconnecting and reconnecting two cables alternately: the cable that connects the PC to the PLC and the cable that connects the V8 series and the PLC.
You may want to check out more software, such as Parallels Workstation, IBM Rational Clearquest or Cara, which might be similar to LadderComOp.