PeterS

Richard, thank-you for quick reply. I already started doing what you suggested to debug my PLC program, but it still seems to hang-up. In my PLC program, is [b]CMD"#1$"[/b] correct? Or do I need to use [b]CMDP"#1$"[/b] to commuate brushless servo motor in GeoBrick?

I am trying to debug a PLC program I wrote for homing all axes connected to a 6-axis GeoBrick, which communicates over USB port to host PC. I am using latest version PEWIN32PRO2. As the built-in PCL debugger does not seem to work right, I am adding SEND"start home X-axis" statements in my PLC code to figure out where PCL program fails. When I run PLC program, these text strings are not displayed in the PEWIN terminal window. I tried all versions: SEND, SENDS, SENDP, SENDR, SENDA and none of them work. Does the SEND command not work when using USB port? Same with COMMAND (CMD) command. Which one do I use for USB port CMD, CMDS, CMDP, CMDR or CMDA.