EL5151, EL5152 - Operating modes and settings

General

The EL515x incremental encoder interface terminal enables connection of incremental encoders with the Bus Coupler or the PLC. A 32-bit counter (EL5152: two 32-bit counters) with quadrature decoder as well as a 32-bit latch (EL5151 only) can be read, set or activated (switchable to 16-bit). In addition to the encoder inputs A, B and C, a gate/latch input (24 V) is also available on the EL5151 for latching/saving the counter value. The gate/latch input is parameterizable via the CoE directory. no function, or disabling the counter at HIGH or LOW signal level.

The EL5151 can also be used as a single-channel 32/16 bit counter on channel A, in which case the signal level on channel B defines the count direction. The changeover to this mode takes place via the CoE directory.

The Counter Value input value represents a 32-bit “position counter”. At the period input the period between two positive edges of channel A is measured with a resolution of 100 ns (default setting, decimal value x 100 ns). Depending on the setting (index 0x8000:14, index 0x8000:16), the period length may be up to 1.6 s or 3.2 s.