PdL

Tell me about it Bob... maintaining these oversized HMI programs is a nightmare... we have decided to go back to basic again. Just 2 flavors, simple basic HMI for local control and alarms, or a SCADA package. Just too much work into these things. When the Omron distributor stops by and you show him a NS12 program and he thinks its a Dyalox running CX-Supervisor, you know you have gone too far

Here's an example (you might have to register on MyOmron.com before you can access this) http://www.myomron.com/index.php?action=kb&article=1380

Win7 doesn't seem officially supported. From the user manual: However I am not sure if your error is related to the O/S. I don't use CX-Server lite myself, perhaps someone who does can comment on this.

Dipswitch 5 to ON will set the default comms on both ports (after a power cycle) to 7,e,2 @ 9600.

You mention a RS232 extension module, by my knowledge the CQM1 CPU series cannot accomodate such a module. Isn't your CPU a CQM1H series with SCB41 board fitted? Please mention exact type no of your hardware, ideally post a picture of the setup!

Well let's hope it keeps up, glad you got it working!

Dear Tim, happy birthday and I hope you get to spend some time with the family to celebrate!! :nana::-2 :beerchug:

My latest System installer that came with NTST4.8 is 2.00. Perhaps you can update your NTST software. If you have CX-One, you will find it in the installation DVD under Utilities. Do you get this "Unable to download system program" immediately after you press "Run system" on the PT? I have no model to test here, but isn't there an option to erase system program or initialize the memory, perhaps that would help. Otherwise I think you need to get it repaired...

I had the same with an NS Terminal recently, it said Please recover the system program but every attempt to do so failed. Send it out for repair and the memory was replaced after all ok again. I asume you have tried the obvious, checked cable, release reset button while pressing upper left corner to access system download menu, select correct file from NT system installer (I attached correct version to be sure). If all fails, you might need to get it repaired... NT-AQF0F.rar

Right. I left my crystall ball at home today so I'll just guess you are talking about Data Logging in an NS-Terminal using CX-Designer... there are ways to calculate filesize etc. but I would just setup the logging as you wish, then check the filesize on the CF card and calculate it yourself according to your periodic/ring buffer settings.

I think it is a matter of trial and error, try to find out if the problem it tied to physical location? But I agree it doesn't make much sense.

OK, wiring seems correct. If the loop is not established the problem must be electrical, regardless of range setting. Do you have the AD2 wired up fixed to some terminals where you test your connections or do you connect/disconnect directly on the AD2? One thing I have experienced with the spring clamp terminals on the slice I/O, is that if you push the wire in too deep, the clamp is on the wire isolation and not the copper. You can check this by taking out the wire and check if you see a clamp print on the isolation. Another thing to check is if you both A5/A6 and B5/B6 read 120 Ohms.

Can you post a wiring diagram how you have connected your inputs?

Whoops, I did do a quick read up in the CQM1H manual but I guess too quick... thanks Jay

Well I am glad for you that it is working. Hopefully next time you will be more clear and give a better description of your efforts.

TC202 digital outputs are allocated from IR100, just as any other output unit. I asume you are using CX-Programmer, in that case you would right click the coil in the ladder and select Force > On.

There is something that would answer your questions. It's called a manual. CP1L Operation Manual @ MrPLC.com CP1L documentation

Hi NASIR, let me ask you a question. Describe to me what message you see in the trace. Then ask yourself if this function code will work to change the frequency.

To start, the Ethernet unit must be loaded in the IO Table. Go online with the PLC by serial connection on the peripheral port (use autodetect online). I asume you have an ETN21 as you did not mention. - Make sure the rotary "Unit no" switch is set to a unique number. If you only have the ETN21 unit in your configuration you can set it to 0. - When online, set the operation mode to Program. - Open the IO Table and Unit Setup in CX-Programmer. - Go to Options and select "Create" to let the PLC auto register the attached units. - The ETN21 should show up in the list. Double click it to view/edit the settings. - Set the IP settings to match the subnet of your laptop you wish to connect with. Note the last octet of the IP address you setup in the ETN21. - Transfer the settings to the ETN21 (Transfer PC > Unit) - Power off the PLC - Set the 2 Node no. rotary switches on the ETN21 to the HEX number of the last octect of the IP adress you set. E.G. if you set 192.168.1.35, you take 35, convert to HEX which is 23. Now set x161 switch to 2 and set x160 switch to 3. - Power on PLC, error light should be gone. - In CX-Programmer, change Network type to Ethernet. At settings > Driver tab, fill in the IP address of the ETN21. Now you should be able to connect. That is all help I can give with the given information. Next time mention CPU type, ETN unit type etc. You also might want to download the relevant manuals.

1. Stop adding whistles and bells to your program and keep it simple with just 1 command to execute until you are sure it works and you understand why it works. Why have you added a fixed CRC to the send command? 2. Start commenting your program and use symbol names if you want people to help you out. 3. Let us know what your have done and investigated yourself to find out what is wrong, to give other people the impression that they are not the only ones working on your problem, instead of just posting the problems you encounter.

Well there you go, I didn't know that either. Sounds like the solution to NASIR's problem!

Come on NASIR, I mentioned it in my previous post. Use a RS232/485 converter! At PLC side, you can also swap ports on the SCB...

I use these software simulators together with a 232/485 converter on my laptop. For 30 days you can connect 10 minutes, after that you have to buy a license. It is worth the money, helped me several times in similar cases. http://www.modbustoo...om/download.asp p.s. using quote tags is real easy, just highlight a piece of text and hit the quote button. But if you select reply on the post itself, the quote tags are inserted automatically...I have been fixing your quote tags throughout the topic...

Still not clear to me if your first attempt using function code 05 to set a bit worked or if you just moved on to function code 06 to see if it works but it looks like your problem is simply that the PLC does not reveive an answer and therefore 207.12 doesn't turn off. With write functions it expects an echo of the send command. Have you checked wiring, no swapped lines, termination (not sure what distance we are talking about here) etc? Else use Modbus simulator software to test both sides independently, a slave simulator to simulate the VFD and then you will see the response in your trace and a master simulator to simulate your PLC and try your commands, usually that brings up the problem.

Does the frequency value you send lie within the permittable frequency range of the drive? I know if you send a frequency outside this range to a V1000, it simply goes into error. Does the VFD have a Operator panel with display? Does it show the frequency reference? Not sure what you mean with the bit going "gary", try to explain better... By the way I don'n have CX-Protocol running on my Android phone yet so I am not able to check the trace file...