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What is your input pulse interval? Normal condition, the input will always pulsing? If abnormal input no pulse? During actual test, does Y0 trigger?

Hi guys. During trobuleshooting one of our machines, I found that some DI modules give 24VDC when contact is OFF and 0VDC when contact is ON. Is there anywhere I can configure and change that setting? Thanks.

Did you able to read the GOT or do communication test?

Basically, you want a remote access to your PLC through internet? Try go search for MCWorks and MXConfigurator.  

Thanks! How about H400?  Binary is  010000000000 , does it mean it was for M70?

Hi guys, I come across a program with instruction MOV H10 K4M60 But I cannot understand how this will turn on M64? Tried to convert from H10 to binary (00010000). Also there is MOV H400 K4M60 and I'm not sure which bit is trigger. I believe it was M65 but the binary is 010000000000. Thanks!  

I believe you need to check all PLC/HMI, see if any of them if connected/referring to network #3. If I'm not mistaken, you could check at CC Link configuration, maybe for IO mapping. Btw, which model of PLC?

Looks like something disconnect from the module. Is your ENET module blinking? Try to ping the PLC.

Thank you very much.

I have had an issue with FX5U before. The PLC wont power on. I was told by our contractor, the PSU can be repair (change electronic part). But luckily, the PLC power back on after we dismantle all the part and do air spray cleaning. 

Thanks for your reply. Why x 4? Any reason? Applied to D, X and Y as well?

Hi, I found this instruction on this ladder and wondering how it is calculated? From the right, I understand they compare value from M0-M31 to M300-M331 because they started next with M32/M332. I thought it K8 * 8bit = 64 but it is not.      Thanks!

Thanks a lot!  

Hi, I was wondering, is there a better way to check for spare points beside searching for one-by-one in the program? Thanks!

Thansk! 2nd method works for me.