GE RSTi-EP User Manual page 165

The counter module EP-5111 can read one square-wave signal (1 channel) (for example, from an
incremental encoder) with a maximum input frequency of 100 kHz. The 32-bit counter can count up
or down within a predetermined range of values.
The counter can be controlled using software or externally through the latch, gate, and reset inputs.
A digital output can be parameterized to be activated immediately upon either dropping below,
meeting, or exceeding the set comparison value. An overrun time can be provided with the
parameter Pulse duration. Thus the PLC will recognize even signals succeeding extremely fast.
In mode Pulse and Direction, channel CH0 A is used as the input and channel CH0 B as a direction-
determining input. In incremental mode, an incremental encoder with track A and B can be
connected. A status LED is assigned to each channel. The module electronics supply the connected
sensors with power from the input current path (I
For error messages refer to the chapter, LED Indicators and Troubleshooting.
GFK-2958E
).
IN
LED Indicators EP-5111
Green: Communication over the system bus
Module
Status
Red: Module System Fault or Diagnostic Fault
1.1 Yellow: A/pulse controlled
1.2 --
1.3 --
1.4 Yellow: B/direction controlled
2.1 Yellow: output set
2.2 --
2.3 --
2.4 Yellow: reset input controlled
3.1 Yellow: latch input controlled
3.2 --
3.3 --
3.4 Yellow: gate input (HW gate) controlled
RSTi-EP User Manual
Chapter 5 Detailed Descriptions of I/O Modules
161