Resources|Blog|PLC WorkShop Suite for Modicon|PLC WorkShop for Modicon v5.03 Release Notes PLC WorkShop for Modicon v5.03 Release Notes Posted: 12/19/2000 Solutions Corrected problem where Loading or Saving the .EXE loadables LSUP and G398 to the 258 PLC causes a “Communications(8) – Invalid Parameter” error. Contact Sales