TB20 Counter Economy 24 V, 1 kHz, 32 bit

Counters are used to detect pulses that are faster than a controller’s cycles, i.e., signals that the controller will be unable to detect properly and that therefore need to be pre-processed.

The counter module detects the edges of 24 V signals as pulses. The pulses are counted and the count is always available up to date for the PLC.
The count function can be enabled through PLC control commands.
The count can be preallocated or reset through the PLC.

PLC control functions

  • Enable counter
  • Reset count
  • Load count
  • Change count direction
  • Count depth 32 bit (sign-allocated ± 231)
  • Up to 1 kHz counting frequency per counter
  • 24 V voltage supply for counter
Input voltage24 V
Electrical isolation
from the backplane busYes
Between the channelsNo
Current draw
ExternalMax. 0 mA
InternalMax. 22 mA
Power dissipation0.5 W
Input characteristic curveType 2, EN 61131-2
Counter bit depth32 bit, sign allocated +/- 231
Counting frequency per channelMax. 1 kHz, 1x evaluation, rising edges
Counter functionsForwards/backwards, Load count, Reset count
Hot-swap capable Yes



2x Counter Economy 24 V, 1 kHz, 32 bi600-300-1AB01
4x Counter Economy 24 V, 1 kHz, 32 Bit600-300-1AD01