Siemens SPS starter kit 6ED1057-3BA00-0AA8 12 Vdc, 24 Vdc 6ED1057-3BA00-0AA8 Ficha De Dados
Códigos do produto
6ED1057-3BA00-0AA8
Reference material
5.3 Special functions
LOGO!Soft Comfort Online Help
Operating Instructions, 06/2014
Operating Instructions, 06/2014
247
5.3.2
Counters
5.3.2.1
Up/Down counter
Short description
An input pulse increments or decrements an internal value, depending on the parameter
setting. The output is set or reset when a configured threshold is reached. The direction of
count can be changed with a signal at input Dir.
Connection
Description
Input R
You reset the output and the internal counter value to the start value (StartVal)
with a signal at input R (Reset)
Input Cnt
This function counts the 0 to 1 transitions at input Cnt. It does not count 1 to 0
transitions.
•
•
Use the inputs I3, I4, I5, and I6 for high-frequency counts (LOGO!
12/24RC/RCo, LOGO! 12/24RCE, LOGO! 24/24o and LOGO! 24C/24Co):
max. 5 kHz, if the fast input is directly connected to the Up/Down counter
function block
•
Use any other input or circuit element for low-frequency counts (typically 4
Hz).
Input Dir
Input Dir (Direction) determines the direction of count:
Dir = 0: Up
Dir = 1: Down
Parameter
On: On threshold / Value range: 0 to 999999
Off: Off threshold / Value range 0 to 999999
Start Value: Initial value from which to begin counting either down or up.
Retentivity on = the status is retentive in memory.
Output Q
Q is set and reset according to the actual value at Cnt and the set thresholds.
Parameters On and Off
The on threshold On and the off threshold Off can be provided by the value of another
already-programmed function:
● Analog comparator: Ax - Ay
● Analog threshold trigger: Ax
● Analog amplifier: Ax
● Analog multiplexer: AQ
● Analog ramp: AQ
● Mathematic instruction: AQ
● Analog comparator: Ax - Ay
● Analog threshold trigger: Ax
● Analog amplifier: Ax
● Analog multiplexer: AQ
● Analog ramp: AQ
● Mathematic instruction: AQ