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Failure Information
| Product | Contents | Date |
| MCX501 MCX512 MCX514 |
◆Interrupt signal at reset When any of the following interrupt factors is set in WR1 register and Reset (RESETN input signal, software reset) is executed, a phenomenon which is the output signal INT0N momentarily drops to Low level unexpectedly occurs although there is no interrupt factor. The interrupt factors in WR1 register for each axis：D6 bit(C-END)，D7 bit(D-END)，D8 bit(H-END)，D11 bit(SPLTE) Workaround： When this phenomenon causes the output signal INT0N momentarily drops to Low level and the host CPU, etc. read out RR1 register (interrupt factor display), all bits of each axis RR1 register become 0. Since a bit of the interrupt factor becomes 1 at the time of the correct interrupt, it can be judged that this phenomenon occurs if the read out figure is 0. |
Dec.14 2022 UP! |
|---|---|---|
| MCX501 MCX512 MCX514 |
In absolute position driving, the IC calculates the drive direction and the output pulse number according to the difference between the absolute position of the specified destination and the current position (logical position counter), and then performs the driving. If the output pulse number becomes over 2,147,483,646 pulses, it may not operate properly. Workaround： Specify the absolute destination position to make the output pulse number which is determined by the difference between the absolute position of the destination and the current position never exceed 2,147,483,646 pulses. In absolute position driving, when the user wants to drive the number of output pulses beyond this range, execute absolute position driving in two or more steps. |
Dec.14 2022 UP! |
| MCX501 MCX512 MCX514 |
In trapezoidal acceleration/deceleration fixed pulse driving, when triangle form prevention function is enabled, the drive speed can’t be changed to a higher value than the current set value in the latter half of the driving after finishing outputting half of the total output pulses. Workaround： When changing the speed during fixed pulse driving, disable Triangle Form Prevention function. |
Dec.14 2022 UP! |
| MCX312 | In executing continuous interpolation, writing the interpolation command for the next segment during outputting the last pulse of the present segment, the irregular driving will occur, it keeps outputting pulses continuously. Workaround： ・Set the adequate values of output pulse number and drive speed for each segment in order to keep enough time to write interpolation data and command by CPU within the time for the interpolation driving of each segment. ・Set more than "2" as the output pulse number for each segment. |
Jul. 26 2011 |
| MCX302 MCX312 MCX304 MC8082P MC8082Pe MC8042P MC8022P |
When using fixed pulse driving in S-curve acceleration/deceleration, pulse may be continuously output. Click here for the details and the workaround. |
Oct. 26 2006 |
| MCX302 MCX312 MCX304 MC8082P MC8082Pe MC8042P MC8022P |
Although the range of position comparison between position counter and compare register (COMP+, -) is shown as from -2,147,483,648 to +2,147,483,647 (signed 32-bit) in user’s manual, actually it is from -1,073,741,824 to +1,073,741,823 (signed 31-bit) due to the defect of IC. Workaround： Don’t compare the values over the range from -1,073,741,824 to +1,073,741,823. |
May. 23 2006 |
| MCX302 MCX312 MCX304 MC8082P MC8082Pe MC8042P MC8022P |
In S-curve acceleration/deceleration for fixed pulse and continuous drive, it keeps to drive in initial speed. Click here for the details and the workaround. |
Sep. 21 2005 |
| MR210AU MR220AU |
In index drive, executing HOM action after the execution of step of End-P= 0, end pulse is not output even though End-P= 1 is set. Workaround： Set the step of INC 0 End-P=1 to the axis in advance and execute it before HOM action. |
Sep. 26 2005 |
| MR210AU MR220AU |
Enable “Using Limit Signal” of Mode, returning information is back as Limit Error=0 even though ERD command is issued when Hardware Limit Error and Software limit Error. Workaround： Refer to ERR bit of INR command. You can see the error status, if ERR bit is 1. |
Sep. 26 2005 |
| MR210AU MR220AU |
If the error occurs in Index drive mode, the LED indicators of X and Y do not flash and error status is not shown. Workaround： Confirm the error status by the flashing of parallel XEEROR and YERROR signals. instead. |
Sep. 26 2005 |