Product overview
EL5101, EL5101-0010, EL5101-0011
15
Version: 4.2
3.2
Technology
The EL5101-00x0 incremental encoder interface terminal enables connection of incremental encoders with
A/B/C track to the Bus Coupler and the PLC. 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) can be read, set or enabled. Differential
signals based on RS485 are provided as encoder connection. From
hardware 09 [
}
176]
single-ended 5 V
signals are possible for the EL5101-0000 based on pull-up resistors.
In addition to the encoder inputs A, B and C, an additional latch input G1 (24 V) and a gate input G2 (24 V)
for locking the counter during operation are available.
The terminal is supplied as a 4-fold quadrature decoder with complementary analysis of the sensor signals
A, B, C. If the incremental encoder has an alarm output it can be connected to the INPUT 1 status input of
the EL5101-00x0. The EL5101-0000 can optionally be operated as a bidirectional counter terminal on
channel A.
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 extended 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
- Broken wire detection
- Connection of SingleEnded signals
possible
Table 1: Operating modes EL5101-0000
The EL5101-0010 with a resolution of 20 mio. increments/s at 5 MHz and 4-fold evaluation is only applicable
for the enhanced operating mode. The inputs can process differential signals according to RS485. The
microincrement mode is not available for the EL5101-0010.
Note
Compatibility in the case of service
An EL5101-0000 designed for and used in enhanced operating mode cannot be replaced
with an EL5101-0000 with older hardware version (< 09)! An EL5101-0010 only supports
the enhanced operating mode and is not exchange-compatible with an EL5101-0000 (hard-
ware version < 09)!
Irrespective of the hardware/firmware version, after integration into a system an EL5101-0000 reports in
normal operating mode.
During commissioning the user has to decide with what functionality, i.e. in what operating mode, the
EL5101-0000 is to be used. This depends on the required functions and, of course, the hardware version.
Hardware older then
firmware 14/hardware 09 [
}
176]
, for example, will not support enhanced operating
mode functions.
Combination of functions from different operating modes is not possible.
Specific settings are described in the following two sections.
