Manufacturing Engineering & Technology 7th Edition Chapter 8 review questions 9-

Question

Manufacturing Engineering & Technology 7th Edition        Chapter 8 review questions 9-28

Timer instruction T4:0 uses three 16-bit registers. These timer registers are, , and. The preset value for timer T4:0 is in the register. The accumulated value for timer T4:0 is in the register. When the timer is de-energized, content of its accumulated register will reset to zero. The instruction transfers either a number or content of a register to a destination register. You must use the instruction to reset a non-retentive timer instruction. If you de-energize the non-retentive ON-delay timer instruction T4:0, its accumulated register will its content. When the ON-delay timer instruction T4:0 is finished timing, it, timer timing coil (T4:0/TT) is. When the OFF-delay timer instruction T4:0 is finished timing, its timer done coil (T4:0/DN) is. While the OFF-delay timer instruction T4:0 is timing, its timer timing coil (T4:0/TT) is. Specify if the following statements are true or false. Timer instructions in fixed SLC 500 PLC systems have variable time base values. You can reset an ON-delay retentive timer by de-energizing it. The timer OFF-delay instruction is a retentive timer instruction. When the timer ON-delay instruction T4:0 is timing, its normally closed timer timing contact (T4:0/TT) is closed. When the timer OFF-delay instruction T4:0 is timing, its normally closed timer timing contact (T4:0/TT) is closed.0 When the timer OFF-delay instruction T4:0 is finished timing, its normally closed timer done contact (T4:0/DN) is opened. You must energize an ON-delay timer instruction to start it. You must de-energize an OFF-delay timer instruction to star it. You must use a RESET (RES) instruction to reset a retentive timer ON-delay instruction. Addresses T4:0 through T4:255 are used for timer instructions.

Explanation / Answer

subpart 01-

9 - time-based,accumulator & preset (these are 3 16bit registers in timer T40)

subpart 02-

10- preset(this is register has preset value)

subpart 03-

11- accomodation value is in accumulator register

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