Omron C200HX Operation Manual page 181

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Timer and Counter Instructions

Flicker Bits

00000 TIM 002

The following one-shot timer may be used to save memory.

Bits can be programmed to turn ON and OFF at regular intervals while a desig-

nated execution condition is ON by using TIM twice. One TIM functions to turn

ON and OFF a specified bit, i.e., the Completion Flag of this TIM turns the speci-

fied bit ON and OFF. The other TIM functions to control the operation of the first

TIM, i.e., when the first TIM's Completion Flag goes ON, the second TIM is

started and when the second TIM's Completion Flag goes ON, the first TIM is

A simpler but less flexible method of creating a flicker bit is to AND one of the SR

area clock pulse bits with the execution condition that is to be ON when the flick-

er bit is operating. Although this method does not use TIM, it is included here for

comparison. This method is more limited because the ON and OFF times must

be the same and they depend on the clock pulse bits available in the SR area.

In the following example the 1-second clock pulse is used (25502) so that 00206

would be turned ON and OFF every second, i.e., it would be ON for 0.5 seconds

and OFF for 0.5 seconds. Precise timing and the initial status of 00206 would

depend on the status of the clock pulse when 00000 goes ON.

Address Instruction

Address Instruction

Address Instruction

Section 5-14

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