Siemens 6ED1050-1AA00-0BE8 manual 6ZLWFK 2Q, Shift register

LOGO! functions

4.4 Special functions list - SF

Let us assume you want to set 'Switch' (On).

1.Change to the editing mode: Confirm with OK (the cursor is now positioned on 'Off')

2.To change from 'Off' to 'On': Press or

3.Confirm your entries with Press OK

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6ZLWFK 2Q

7KHSXVKEXWWRQVZLWFKKHUHLV

VZLWFKHGRQ

4.4.27Shift register

Short description

You can use the shift register function to read the value of an input and to shift its bits left or right. The output value corresponds with the configured shift register bit. The shifting direction can be changed at a special input.

	Symbol in LOGO!		Wiring	Description
	,Q		Input In	Input read at the start of the function.
			Input Trg	A positive edge (0 to 1 transition) at input Trg
	7UJ	4
	'LU			(Trigger) starts the special function. 1 to 0 transitions
	3DU			are irrelevant.
			Input Dir	The signal at input Dir determines the shifting
				direction for the shift register bits S1 to S8 (if 0BA6)
				or Sx.1 to Sx.8 (if 0BA7). "x" refers to the configured
				shift register byte index 1, 2, 3, or 4.
				Dir = 0: Shift up
				(0BA6: S1 >> S8; 0BA7: Sx.1>>Sx.8)
				Dir = 1: Shift down
				(0BA6: S8 >> S1; 0BA7: Sx.8>>Sx.1)
			Parameter	Shift register bit that determines the value at output
				Q.
				Possible settings (if 0BA6):
				S1 to S8
				Possible settings (if 0BA7):
				Byte index: 1 to 4
				Q: S1 to S8
				LOGO! 0BA7 provides a maximum of 32 shift register
				bits, with 8 bits per shift register.
				Retentivity:
				/ = No retentivity
				R = The status is retentive.
			Output Q	The output value corresponds with the configured
				shift register bit.
LOGO!
Manual, 04/2011, A5E03556174-01				245