Shop OBEX P1 Docs P2 Docs Learn Events
Some Basic 'Stamp PLC' questions — Parallax Forums

Some Basic 'Stamp PLC' questions

crgwbrcrgwbr Posts: 614
edited 2007-05-30 22:59 in General Discussion
1. Will the Stamp PLC Work okay with the SpinStamp?

2. Will the PLC run at 12v, or only 24v?

3. What is the Max current output of the 8 digital outputs? What voltage do they work at?

4. What voltage do the digital inputs trigger at?

5. What are the PLC's dimensions?

Thanks A lot,
Craig

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
I would love to change the world, but they won't give me the source code

People say that if you play Microsoft CD's backwards, you hear satanic things, but that's nothing, because if you play them forwards, they install Windows.

I spent a minute looking at my own code by accident. I was thinking "What the heck is this guy doing?"

Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-05-30 22:37
    Craig,

    I’m going to have to say, “no” on this one…If it were as simple and optical I/O there wouldn’t be any problems, but there are two integrated circuits that are running from 5V which output to the BASIC Stamp. The MAX1270 is optional so that could be omitted, however the 74HC165 Parallel to Serial shift register is a physical part of the system and would be sending serial (SPI) data back to the Stamp Module at 5V levels, and there is no way to include a series resistor to prevent problems. I hope this helps. Take care.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage
    Parallax Tech Support
  • crgwbrcrgwbr Posts: 614
    edited 2007-05-30 22:58
    That's unfortunate. My boss is making me redesign a project using a PLC instead of a custom designed propeller board. This means I'll have to use another brand, like Siemens, and learn another language. Maybe I can convince him that the custom board will be just as reliable.

    Thanks Anyway,
    Craig

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    I would love to change the world, but they won't give me the source code

    People say that if you play Microsoft CD's backwards, you hear satanic things, but that's nothing, because if you play them forwards, they install Windows.

    I spent a minute looking at my own code by accident. I was thinking "What the heck is this guy doing?"
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-05-30 22:59
    Craig,

    All you really need to handle is the optical isolation and output drivers. That would be pretty straight forward. Take care.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage
    Parallax Tech Support
Sign In or Register to comment.