Скачать или смотреть BIT SHIFT REGISTERS IN SCHNEIDER PLC TM221 | IPCS AUTOMATION

Bit shift register instructions are PLC output instructions that are used to load data into a bit array, one bit at a time. The data is shifted through the bit array, and then unloaded from the bit array one bit at a time. .The shift register instruction will move a range of consecutive bits. This movement is controlled by the clock input bit which will trigger with each transition from off to on. The bits continually shift with the clock pulse until the end bit number. When the bit shifts past the last bit number then the bit information is lost. The data input will put a ‘1’ or a ‘0’ in the first bit of the shift register.Shift register instructions are useful in conveyor applications and product evaluation (pass/fail) control