Product overview
EL5101, EL5101-0010, EL5101-0011
13
Version: 4.2
3
Product overview
3.1
Introduction
Interface terminal for incremental encoder
EL5101-00x0
Fig. 9: EL5101
The EL5101-00x0 EtherCAT Terminal is an interface for direct connection of incremental encoders with
differential inputs (RS422). A 16-bit counter (in normal operating mode) or a switchable 16/32-bit counter (in
enhanced operating mode) with a quadrature decoder and a 16-bit latch (in normal operating mode) or 32-bit
latch (in enhanced operating mode) for the zero pulse can be read, set or enabled. Incremental encoders
with alarm output can be connected at the negative switching status input of the interface. The measurement
of period and frequency is possible. The gate input allows the locking of the counter, alternatively with a high
or low level. The latch input is similarly configurable and evaluates high or low levels. The EL5101-0000 can
also be used as bidirectional counter on channel A; channel B specifies the count direction.
Through the further development of the EL5101-0000 an enhanced operating mode is available (from
firmware 14 / hardware 09 [
}
176]
), which can be parameterized in the TwinCAT System Manager,
depending on the hardware used.
Older EL5101-0000 devices do not support this enhanced operating mode (see Table 1)!
Version
from FW/HW
ESI
Functional description
normal operating mode
EL5101-0000
03/05
from EL5101-0000-0000
All basic functions as described above
enhanced operating mode
EL5101-0000
14/09
from EL5101-0000-1018
Changes to the normal operating mode
- Distributed clock support
- Micro-increments
- Open circuit detection
- Connection of SingleEnded signals possible
Table 1: Operating modes EL5101-0000
Summary of Contents for EL5101
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