Messages

21

Modbus / Re: Struggling with RS485 & Teco 7300CV

« on: April 27, 2011, 08:11:44 PM »

This thread is now dead .. I added a new thread called 'My SJ200 & Mach3 setup' to avoid confusion

22

Modbus / My SJ200 & Mach3 setup

« on: April 27, 2011, 08:09:12 PM »

Switched to a Hitachi SJ200 after my original Teco drive failed on me.
There were many frustrating hours spent trying to get this working but I finally figured it out. 
Below are the Modbus setup screen & the Brain I'm using to accomplish Forward / Reverse / RPM's in Mach.

Since all it takes is to write to 1 coil for reverse motion that was easy (the second coil defaults to 0 which changes direction to forward)
The hardest part for me was figuring out how to write to two coils at the same time to get forward motion. 
Finally dawned on me I could use the same 'Spindle CW on' LED twice to do this .. mapping it once to coil '0' & once to coil '1' .
Once I made that single change in my brain .. it worked perfectly.
RPM's also have to be written to register '0' to work .. because again that's actually the first register.

Hope this helps someone else who's struggling like I did to understand this stuff.

23

Modbus / Re: Struggling with RS485 & Teco 7300CV

« on: April 24, 2011, 02:56:21 AM »

Well after MANY, MANY headaches .. It's working!
Scratched the ModIO & used a 232 to 485 converter and I have control over fwd / rev & speed ..
Will post some screen shots of my final setup when I can get back to this .. right now I'm DONE!

24

Modbus / Re: Struggling with RS485 & Teco 7300CV

« on: April 23, 2011, 03:58:48 PM »

Scratch the last post .. I could not get the ModIO to communicate with the drive no matter what I did.  It's working with the RS232/RS485 converter & I can Start/Stop/Change Direction/Change Frequency from the Modbus Test page in Mach .. what I can't seem to do is come up with a brain that will either change directions or frequency using the MDI.  As far as changing direction .. the motor pauses but continues on in the same direction .. or the VFD faults.  With frequency control I'm having NO luck at all!

Any help would be appreciated

25

Modbus / Re: Struggling with RS485 & Teco 7300CV

« on: April 19, 2011, 02:39:00 AM »

Here's the Modbus config & brain I have in Mach just in case anyone sees an error I'm not seeing ...

26

Modbus / Re: Struggling with RS485 & Teco 7300CV

« on: April 19, 2011, 02:16:43 AM »

Hitachi SJ200 showed up today .. but I'm still stuck.
Can't get any communication with the VFD through the ModIO .. (or with a 232 to 485 converter either)
I've checked settings on the drive & in Mach over & over again .. tried every combination of outputs 1,2,3,4 that I could think of for the 485 cable into the drive. 

NO LUCK ..

Any help would be very much appreciated!

Thanks

27

Modbus / Re: Struggling with RS485 & Teco 7300CV

« on: April 13, 2011, 07:53:42 PM »

OK, ModIO came in .. is set up & communicating with Mach 3 without any apparent issues.

As previously mentioned .. Teco 7300CV drive had to be sent back to FactoryMation for service & they decided to credit me for that one & told me to order a new one as a replacement .. OK Fine, except they are out of stock on my drive now .. so I ordered a Hitachi SJ200 instead which should be here by end of week.  

I believe I have a working setup in Mach's Serial Modbus setup & I'm pretty sure I have a working Brain.  I can lite output LED's on the ModIO using  M3, M4, M7, M8 .. and I can get the spindle rpm dro in Mach to show the spindle speed I'm entering into MDI

I do have some questions for Peter if he should see this post ..

#1 Do I use terminals 2&3 to connect RS485 to the drive? and do I need a ground wire between the ModIO & the Drive also?  
#2 Do I need to switch any jumpers on the ModIO to use it as a 232 to 485 converter? (reading the manual I supposed they only needed to be switched if RS485 was being used to communicate to the ModIO .. is that correct?)
#3 Do I need to create another ModIO setup (called perhaps ModIOVFD) for the drive in the ModIO plugin?  If so, can you give me instructions on what to enable & disable there?  If no 2nd setup is required through the plugin, how do I establish the VFD as node 2 on the modbus chain?

Thanks in advance for your help

28

Modbus / Re: Struggling with RS485 & Teco 7300CV

« on: March 24, 2011, 10:18:04 PM »

Had not seen that one yet but won't do me much good now ..
Talking to supplier about this drive & wound up sending it back to them today ..
We'll see what happens in a week or two when it comes back.

Thanks!

29

Modbus / Re: Struggling with RS485 & Teco 7300CV

« on: March 19, 2011, 10:17:58 AM »

Thanks Peter ..

I'm actually awaiting the arrival of a Homann ModIO which is in transit as we speak ..
I've been trying to get things set up with the 232 to 485 converter in the mean time ..

Screens are below ..

30

Modbus / Struggling with RS485 & Teco 7300CV

« on: March 19, 2011, 02:42:06 AM »

I've read & re-read the articles .. I've tried copying other peoples settings & brains .. but I just can't seem to get modbus controlling the VFD.
I will admit I'm new to this, although I do have considerable computer experience. 
I'm using Serial w/ plug-in and a RS232 to RS485 converter straight out of the serial port. 
I can communicate with the VFD using the setup software that came with it.  I can read & write to output holding registers from the modbus test window but all I get are timeouts & VFD faults when trying to deal with coils.
I have a working brain (everything lights up as expected) 
I would gladly start from scratch if someone can help me set this thing working.

Attached is the VFD function code & memory map manual for those who know what their looking at.