help for INC instruction

[Tancowc 0]

Dear all, My company used 01 PLC type is TSX 3721. I m reading program but i don't undestand 01 instruction: INC ( increase ) in my attached file, somebody please give me timming diagram for INC instruction ( from MW30 =0) Thanks ! Edited 6 May 2014 by Tancowc

[PLCRune 2]

The way it is programmed her it will do as follow. Everytime the program is read the value i MW30 will increase with 1. When the output goes to off the value is set to 0. So it will count number of cycles of the program between the output goes to off.

[Tancowc 0]

Thanks your reply. So, if MW30=300 and PLC's Periodic in attached file, can you caculate for me the time (second) ?

[PLCRune 2]

Yes. The time is 300X20ms =6000ms=6sec