I am running CX-simulator on my desktop PC as PLC CJ1M-CPU11.

I have downloaded sample program to NT21 by NT Support tool.

I have connected NT21 touch screen on serial COM1.
I have done all settings for virtual PLC to communicate through COM1 on PC, but I can not establish working connection between my virtual PLC and NT21.

I have adjusted portA on NT as 1:N link.


PLease help!

What to do?

I have done it!

Conection on the NT21 portA and virtual PLC must be HOST type. Also COM port on the PC must have communication parameters from the NT21: Speed:9600, Bits:7, Stop bits:2,Parity: E ,Flow:None

It is working!

Whoo hoo...

Thanks for the update... and tip...

What cable did you use to connect PC with NT21?

Standard cable to connect PLC and NT21 has 9-pin male connector from both side.

PC comm port has also 9-pin male connector - it will not work - did you just exchange male to female connector with the same pin out or you changed something?

To connect PC and NT21, use this schematic:

PC 9-pin serial connector <=> NT21 9pin

RD 2-------------------------------2 SD
SD 3-------------------------------3 RD
RS 7-------------------------------5 CS
CS 8-------------------------------4 RS
SG 5-------------------------------9 SG

Hi

With cable which has pin out as above you can also connect CX-Simulator with NT21 using NT-Link (1:N).

I set up this configuration on CP1H simulation.

For NT-LINK I had to set up Serial port 2 as below:
[attachmentid=5938]


Make sure you set the same values in port A of NT (38400 baud rate (no faster) and 0 Unit No)

After you transferred settings to virtual PLC you have to disconnect and connect CX-simulator to refresh settings.

It works much faster then hostlink


Pawel