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jeffhansen

Communicating with PLC

6 posts in this topic

I know the answer to this is going to be simple, but I can't find the right button to click. CJ1G-CPU43H I'm trying to transfer the program I've written to the PLC. I'm usin a USB/serial port adaptor which has decided it will be serial port 3, connected to a CS1W-CN226 cable to the Peripheral port of the PLC CPU. CX-Programmer tells me the comms port doesn't exist, and I should change it. I fully agrre, but I'm buggered if I can find where to change the comm port setting. Yours in Frustration, Jeff Edited by jeffhansen

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Doubleclick on your PLC in the Project Workspace. Choose your Network Type, and click Settings -> Driver. There you should see a Port Name field.

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Thanks. Got it. Network type default wasn't what it needed to be, which was Toolbus. That's not very obvious or intuitive.

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Why so? I know of a lot of other brands where things are not as obvious either....

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It's a project that is a conversion from a C1000H program. I don't know what the default should be, just that it wasn't what I needed (and no reason why it should be). It was set to Controller Link. I'm new to Omron, and have no idea what Toolbus or Controller Link mean. I've used Mitsubishi, and I think it has a Communication tab at the top of the page, easy to find. I guess the more options and flexibility a machine has, the more complex and unfriendly it becomes.

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For an -out-of-the-box- Omron PLC, you should use Toolbus with the peripheral port cable. You can use SYSMAC WAY too, but thats slower, and it needs CPU dipswitch 4 on. So, don't do that and just use Toolbus :) Controllerlink is a realtime Omron network. When you have a connection to a PLC with Controllerlink you can connect to any PLC on the Controllerlink network.

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