Basic Function Principles - Beckhoff EL1512 Documentation

5.4

Basic function principles

Table of contents
• Operating mode selection and parameterization [} 109]
The EL15xx input terminals count binary pulses and transfer the current value to the higher-level controller.
In addition to the 32 bit up/down counter, further available operating modes are a 32 bit gated counter or two
32 bit counters. In gated counter mode, a low or high level at the Gate input inhibits the counting function of
the terminal.
If two 32 bit counters are active, the U/D input (terminal point 1) is configured as the input for the first counter
and the Clock 2 input (terminal point 5) as the input for the second counter.
Beyond that, two digital outputs can be set (EL1502 only).
The maximum input frequency is limited to 100 kHz for the EL1502 and 1 kHz for the EL1512; the counters
react to the rising edge of the input signal.
The use of the EL1502 is described below; the same steps are to be performed analogously for the EL1512.
Operating mode selection and parameterization
• Click on the EL1502 terminal in the TwinCAT system configuration tree in the TwinCAT System
Manager (fig. EL1502 in the TwinCAT tree).
• The operation mode can now be selected via the "Process Data [} 127]" and "CoE - Online" tabs in the
TwinCAT System Manager (Config mode) (Fig. "Process Data" tab & "CoE - Online" tab).
Fig. 136: EL1502 in the TwinCAT tree
EL1502, EL1512 Version: 3.5
Commissioning
109