MIKE31

HI MR CARLTON I managed to do it Thank you for the help. I will be back

Thank you I will get back to you tommorrow as I need to try in the shop

MR CARLTON thanks for the reply I have used four counters for each bit generated to get the total count but I am exploring other option. Regarding your reply I did not follow the current count do you refer to count the LSB. thanks mike31

HI Any advice how to count the total bits generated as 4 bit encoder revolves , Thanks

HI EVERYONE I need your help experts I use move instruction to move a word (b3:0) into different location of B file (b3:4) but along the way my source becomes ZERO so causes b3:4 current value to become zero. How can I do this that my destination retains its value in spite of source becomes ZERO (0)many thanks

HI thank you for clarification I did understood about MSB cycling so basically MSB will cycle off/on once in every revolution .

The only MSB bit generated at decimal position 15 so I do not understand how MSB will cycle twice per revolution Thanks

Thanks for the replies I have a questions about absolute encoderand that is for the purpose of counting pulses can I use the encoder bits which directly connected to plc input card or I have to use the outputs bits generated from gray to binary conversion or combination of two. Thanks and I will be back

Thanks BobLfoot for the great help I have another question in regards that absolute encoder works both ways so how do we know how far conveyor or encoder rotated in reverse direction thanks.

HI no sir it did not anyway the processor is burnt . Thanks

HI I put 10 ohm resistor across capacitor to discharge also checked voltage , zero volts across capacitor but still the same with fault led being solid red no luck. Thanks for all your help.mike

I will try again to short VBB and GROUND points again. I have done it a few times but failed Thanks

Thanks TWCONTROL for the reply but if the fault led wasn't solid then communication would have been okay.

HI yes I have done it without battery. I will try it to jumper for more than two minutues and see the result. IF reset is not working then does it mean that the processor is gone Thanks

HI GUYS I have followed AB instruction to reset slc 5/04 processor to factory default but is not working and made sure the ground and vbb are jumpered but no result any advice. Thank you

HI Thanks for the reply I have followed exact instruction but not for two minutes and I have no memory module but I have fault red led and dh+ led red are both solid on, any suggestion? thanks

HELLO I was just reviewing one of our machine plc program and I noticed that there is a addition instruction which source and destination (integer file) is the same word. I searched to find out how the source is originated from but nothing to be found. Any suggestion thanks a lot

HI What is the purpose and use of RTC thanks

HI KEN I wonder if you can post the program in PDF file. Thanks a lot

HI AGAIN what do you mean if synchronized with pc time , if is the case then is not real time clock thanks

Thanks for the reply can you give an example

HI Is it possible to convert your code to PDF format, not everybody got the current revision . Thanks

HI Can somebody explain what are MO and MI files Thanks .

HI I have seen a program (AB rslogix 500) with 15 subroutines but I have noticed that the same output being repeated on different subroutine. This production machine works fine and no problem with it at all. My question: Is this acceptable or not and why some programmer repeat the same output within the plc program, any reason behind it MIKE31