How to Commission Omron’s G9SP Safety PLC

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Valin's "How-To" video series on safety PLC's was very informative and saved me between 8 to 12 hours of reading tedious manuals. I was able to reference the videos as needed for clarification on questions. Going back though the videos I realized you had explained everything well, I just needed to see it once more. Very helpful!

John Peters, President
JJT Design
Hello this is Ray Marquiss from Valin Corporation. This video is going to show the commissioning of Omron’s G9SP safety PLC.

Before we get going, I want to talk about passwords. There are two types of passwords. One is to password protect the PLC so that there's no access to it from the G9SP configuration software, and the other one is to password protect the program files so that you can limit how much editing can be done. Descriptions of the passwords are outlined in the manual that starts with Z922 from Omron and you can see the parameter passwords and device passwords are outlined here and the features that are available for each one shown here. So before you start setting passwords, it's a good idea to look at this section and understand what it is that you're doing.

In order to set the passwords, you go to the communication tab and you can select change device password.  As I've mentioned through several of the videos and I'll mention again and this one, I like to leave the device password alone until I'm ready to just to Commission the system and send it on its way. There are many, many times you have to enter the password for changing the program mode, downloading the program, etc., and so it's a good idea to leave it blank so you don't have to keep entering it over and over again. Sometimes one operation will require entering the password three or four times. The other password is under the file menu, and that's the parameter password.  If you scroll back, you'll be able to see what the difference between the parameter password and the device password are.
In previous videos, we've developed a project and this project may not look like the one that you've done, but it doesn't matter.  It's just to show the process of going online and validating your project and locking the Safety PLC.
In this project I've got a reset switch, door interlock here, and then a safety relay output. So this circuit will work fine. In a previous video we showed how to simulate your program running the simulator in the G9SP configuration software, so we can skip that step now and will go directly to downloading it and testing it on the DLC itself. The first thing that we do to download the PLC program is go online with the PLC by clicking on this Connect button. Or you can go to the communication menu and select connect or do control+W, whichever is convenient for you. Once you're online, you'll see this button option changes here, and these two buttons become available.

The next logical step would be to click on download, which we’ll try now. Confirm your selection by clicking yes. I get this message because this PLC has been in use and is locked already. So in order to unlock it, I'll click on OK here. Go to the communication menu and select unlock. Now the PLC is unlocked. So I can click on the download button. You can see there's a lot of opportunities where I would have to enter the password if I had one set. So during commissioning that's why I like to leave the password blank until the very last time I'm ready to download and ship the machine.

I've downloaded the program. I want to turn on the program monitor so that I can see the status of my inputs and outputs. The dark green means that this one is true. The light green means it's false so that if I open my safety gate, the status of my inputs changes.  Close the gate and it goes back. The next thing I want to test is my reset. I'll test the reset button and I can see that it goes on and then off again, but the output didn't change. This is a common mistake that people make: the PLC needs to be in run mode. You can change to run mode by clicking on the run button here, or going to the communication menu, change mode, run. Once again, that password comes up so I can't stress how nice it is not to have to enter that until the very end. Now I'll try my reset again. Push the button and then let go and you see the output for the safety relay comes on. That's because the reset function Block has been set to look for a rising edge and then a falling edge before it will reset the output. You can go to the properties of the reset function block and change it to a rising edge only. 

Now that the program is downloaded, the next step is to verify. The verify option is greyed out here because we're still monitoring program operation. It's just a feature of the software that you can't verify unless you exit the program monitor by clicking this button. Now we can go to the communication menu, select verify. Once the verification is done. You're presented with this configuration report, which you can print and save with the machine information. I'm just going to close it. After verification, it automatically goes to the locking steps, so when I click yes on this it's going to go through the procedure of locking the PLC so that it can't be tampered with without the password.

And now if I look at the indicators on the front of the PLC, you'll see that this lock indicator is now solid yellow, whereas before it was flashing yellow.

That's all there is to it. If you have any questions, please try the link above or you can call us at the phone number above. If you call, ask for Automation Technical Support and you'll either get me or one of my colleagues to help you out. Thanks a lot and have a great day.

If you have questions you can reach us at the link on the screen or you can call Valin at (855) 737-4716 or fill out our online form.