Functionality

Digital inputs/outputs 8 (24 V DC)
Fast Counter Integrated, many configurable operating modes
LED displays For signal statuses, errors and supply voltage
Internal power supply Through the communication module bus
External power supply Via the terminals ZP and UP (process voltage 24 V DC)

In the operating mode Interrupt IO device, the channels can be configured as follows:

  • Input
  • Output
  • Interrupt input

In this way, important input information can be evaluated independent of the program cycle and outputs can be set.

In the operating mode Counter, the channels can be configured as follows:

  • Input
  • Output
  • 32-bit up/down counter (uses C0…C3) as a 32-bit counter without limit
  • 32-bit periodic counter as a 32-bit counter with a limit
  • Limiter for a 32-bit counter (limit channel 0)
  • 32-bit up counter (forward counter) with the frequencies 50 kHz, 5 kHz and 2.5 kHz
  • Pulse-width modulation (PWM) with a resolution of 10 kHz
  • Time and frequency measurement
  • Frequency output

Used as a Fast Counter module, the 8 channels of the multi-function module DC541-CM can be configured and combined singly, simply and versatilely in the PLC configuration. So it is excellently usable also for universal high-frequency counting tasks up to 50 kHz. In addition, it has measuring functions for rotational speed, time and frequency.

These configurations per channel can now be combined on-board differently for the 8 channels.

Example 1: 32-bit up/down counter incl. zero trace and touch-trigger for max. 50 kHz plus 4 accompanying limiting values (comparison values). When the counter reaches one of the comparison values, the corresponding output can be set in order to trigger control functions at the machine or installation directly.

Example 2: 2 counters for 50 kHz plus frequency measurement with a resolution of 200 µs plus 4 digital I/Os.

Further examples and a detailed description of the fields of application are contained in the chapter “System Technology of the DC541” Configuring the Module DC541-CM.

Commissioning is carried out via the user program by using the appropriate function blocks.