Sergei Troizky

MrPLC Member
 View profile  See their activity

  • Content count

    752

  • Joined

  • Last visited

Posts posted by Sergei Troizky

  3. Posted

    Yes, but if the output is defective, the OP will need to transfer the software to the replacement PLC, so it remains the password protection issue.

  4. Posted · Edited by Sergei Troizky

    How did you apply 5000 value? Always remember, that in the Omron PLC instruction a bare number is not a number, but a CIO address. The speed is 32-bit, so MOVL should be used. Also, "if the SERVO UNLOCK, DEVIATION COUNTER RESET, EMERGENCY STOP, OR DECELERATION STOP command bit is turned ON, the jog command will be ignored. Be sure that all of these command bits are OFF before attempting a jog operation. "

  5. Posted · Edited by Sergei Troizky

    For reverse jog, both Jog and Direction bits must be activated. Also, make jogging subject to the drive locked, and be sure to forbid any other commands to the axis during jogging.

  6. Posted · Edited by Sergei Troizky

    An electronic calculator is a computer. It has all architectural components to be a computer by definition: CPU, memory, I/O devices. The most advanced ones are user-programmable for specific calculations. Any difference with personal computer is only quantitative. So, they might be sold as "handheld computer", "pocket computer", etc. And this is exactly what I meant for PLC vs PAC- a PAC is nothing else but just more powerful PLC.

  7. Posted · Edited by Sergei Troizky

    Agree with this. Typical verbiage, to self-declare own product as "high end", like "magnum" in firearms or "pilsner" in beers. All the differences are quantitative and not all are that important or really necessary. And some are even disadvantageous, like the mentioned I/O update in the middle of the scan.

  8. Posted

    More speed- no. Probably, its speed limit will be even less. For more speed you will need to switch from the motor directly driving the ball screw to some transmission. More torque- yes. This is what a motor is made larger for. However, the ball screw will be in more danger in a case of jam or collision.

  9. Posted · Edited by Sergei Troizky

    Read the Manual. There is a formula to calculate electronic gear for the motor encoder resolution and desired positioning pulses per motor turn. The default setup is NOT for the fastest possible motor speed at certain frequency.

  11. Posted

    Here you are. Change the file extensions manually (this forum allows only limited type of file attachments). The 1st attached file is the .eds, the 2nd one is .ico (robot icon, if you want to have it in the Network Configurator). The eds works with R-30iA,R-30iB robots on CJ1W-EIP21 on CP1H and CJ controllers, and on the NJ CPU EIP port. Never tried it on CJ1W-EIP21 on NJ, but think it will work. Never tried it with older Fanuc controllers. fanucrobot0202.txt industrial_robot.txt
    1 person likes this

  12. Posted · Edited by Sergei Troizky

    1516-1523 should indicate registered nodes. If zeros, these nodes are not registered for communication in the unit. Is the unit the connection originator? Is the unit #0? Was it restarted after the last download? Is the mentioned node address 59 decimal or hex? If hex, it is out of the 4-word range.

  17. Posted

    Not exactly, because the value must be BCD. A Hex notation may or may not look as a valid BCD notation, but the values described almost never are equal. Bridrum22, The BCD encoding dates back to the era of 7-segment indicators and thumbwheel switches. Today, I see no reason to use BCD encoding, except backwards compatibility on retrofit projects. Neither do I see any reason to use Hex encoding for numerical values. Use binary timers/counters, write and monitor values as decimal, and you will avoid many problems.

  19. Posted · Edited by Sergei Troizky

    There is more than one way to reset a timer in Omron. 1. Put the reset condition as a NC contact in front of the timer (this is what Michael mentioned). 2. Use the CNR or CNRX timer/counter group reset instruction. It may be applied to a single timer. 3. Directly write the preset value into the timer. This may (but not necessarily has to) be done by the MOV instruction.

  20. Posted · Edited by Sergei Troizky

    A scan is one pass of cyclic execution of the code by PLC. Physical outputs (Y) are being refreshed only once per scan, more specifically- between scans. Typical scan period is 5-10 milliseconds. Even toggling once per scan will not be properly executed by a solenoid valve, not to mention a cylinder. Did you probably mean activating the cylinder twice under the same conditions?
    1 person likes this