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EL8601-8411 | 12-Channel multi-Interface, 8 x DI, 1 x CNT, 1 x ENC AB, 4 x DO, 2 x PWM, 1 x AI, 1 x AO · 0 次阅读

Reversion of rotation

With a counter/pulse generator

  • the pulses to be counted are specified via track A or connection point "CNT Clk" and
  • the counting direction is specified via the level at track B or the connection point "CNT Dir".
    • Counting direction forward (cw):
      LOW-level at track B, connection point "CNT Dir" or open
    • Counting direction reverse (ccw):
      HIGH level on track B, connection point "CNT Dir"
  • Setting the bit in index 0x8000:0E "Reversion of rotation" inverts the logic of the counting direction.
  • The current status of the levels is displayed
    • at track A or connection point "CNT Clk" via the process data 0x6000:09 "Status of input A" and
    • at track B or connection point "CNT Dir" via the process data 0x6000:0A "Status of input B".

Level at input track B / connection point "CNT Dir"

0x6000:0A
"Status of input B"

0x8000:0E
"Reversion of rotation"

Resulting
counting direction

Input open / LOW level, voltage level < 5 V

FALSE

FALSE

Positive (cw) / forward

FALSE

TRUE

Negative (ccw) / reverse

Voltage level < 11 V at typ. 3 mA

TRUE

FALSE

Negative (ccw) / reverse

TRUE

TRUE

Positive (cw) / forward