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.
Summary of Contents for EL5101
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