You are welcome Jonsmachine,
Some more comments about your original setup though:
Parameter #2, 1=correct for 9 600 Baud. Not many know that value 0=19 200 Baud though.
Parameter #11, RTS / CTS is
Hardware handshake, not software. DC Code and XON / XOFF is software handshake.
I am not sure if it makes any difference, but I always have
parameter #2, CR output set to value 1=On, no matter if handshake is hardware or software.
So, I
only have different settings in screen 8. 2/5 for Hardware vs Software settings:
Hardware settings:
Parameter #11=value 1 for RTS / CTS (Hardware Handshake)
Parameter #12=value 0 for No DC Code Parity
Software settings:
Parameter #11=value 3 for DC Code
Parameter #12=value 1 for DC even Parity added
ALL other CNC Parameters are left as they are unless I change the Baudrate value (Parameter #1) of course.
DNC program settings:
If you mean to use RTS / CTS (Hardware Handshake), RTS / CTS should be checked here.
Cable configuration:
1. I think you got it wrong on the
Computer side. Pin #7 (RTS) should be pin #5(Signal ground).
2. Since MELDAS 520 work so good with
real RTS / CTS signals, why fake it by jumpering pins #4 and #5 on the CNC side? Make the real PC-to-CNC connections instead. See diagram in my last post.
3. Since my CNC's 25-pin receptacle does not have any wire connected to pin #8 (look behind the the panel on your CNC control), I do not jumper pin #8 to pins #6 & #20.
4. Note, I also have a jumper wire between pins #4 & #6 on the PC (Computer) side.
5. I have found that my cable configuration works with
all handshake settings that I have tried so far (RTS / CTS, DC Code, XON / XOFF).