Member Login
Search
Jump to a Date
Sponsored Communities
Cool stuff
Twitter Feed
Neat Stuff

Visit our shop for nerds in control lifestyle products.
Thermal Overload
The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
Aleph-null bottles of beer on the wall,
Aleph-null bottles of beer,
You take one down, and pass it around,
Aleph-null bottles of beer on the wall.
Aleph-null bottles of beer,
You take one down, and pass it around,
Aleph-null bottles of beer on the wall.
RSS Feed
www.control.com/rss/
To get a personalized feed, become a member at no cost.
I've hit a bit of a stumbling point in my first experiments in motion control.
My Setup:
I have a Hitachi VFD connected to my PC via Hitachi's "ConverterCable" (this is just a RS-232 <> RS-422 converter).
My Goal:
I'd like to use an existing Modbus implementation (probably NModbus or jamod) to send Start/Stop/FW/RW commands to the VFD.
Right now I'm able to control the VFD using Hitachi's ProDrive software, which I believe uses Modbus. My problem is that I don't really know what registers I should be reading-from and writing-to in order to get control. Does anyone have any insight as to where I can get this information?
I really appreciate any advice anyone can give me in getting closer to my "Goal".
Thanks!
-Zorlack
My Setup:
I have a Hitachi VFD connected to my PC via Hitachi's "ConverterCable" (this is just a RS-232 <> RS-422 converter).
My Goal:
I'd like to use an existing Modbus implementation (probably NModbus or jamod) to send Start/Stop/FW/RW commands to the VFD.
Right now I'm able to control the VFD using Hitachi's ProDrive software, which I believe uses Modbus. My problem is that I don't really know what registers I should be reading-from and writing-to in order to get control. Does anyone have any insight as to where I can get this information?
I really appreciate any advice anyone can give me in getting closer to my "Goal".
Thanks!
-Zorlack
Hi,
Ask Hitachi, they built it! If they don't publish the protocol, then ditch their drives and choose another manufacturer that does. Try Danfoss or Siemens, I know their Protocols are available.
Marc Sinclair
Ask Hitachi, they built it! If they don't publish the protocol, then ditch their drives and choose another manufacturer that does. Try Danfoss or Siemens, I know their Protocols are available.
Marc Sinclair
From Control Engineering magazine...
Related articles from Control
Engineering magazine- Free webinar on Zigbee for embedded systems
- WirelessHART compliance verification receiver available
- PTO reports high growth, cross-industry collaboration
- Wireless helps Hexion with smoke detection, control room reporting
- Wireless networks for water and wastewater plant: easy, timely info access
- Chemical company processes critical data via wireless Ethernet
- Enclosures: Improve NEMA designs, enclose wireless equipment, keep cabinets cool
- New products: Supporting wireless communications at every level
- NIWeek: National Instruments targets WiFi, Ethernet, adds LabVIEW 8.6
Above articles copyright 2009 Reed Business Information.
Subject to its Terms of Use.
Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2009 Nerds in Control, LLC. All rights reserved.
advertisements
What end users are looking for. Strengthen vendor programs.
Find the right Modbus device for your project... or list your Modbus device on the largest online Modbus device directory.
Servo, stepping motor control, analog & web HMI in one system!
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Patronize our advertisers!



