Overview; Counter Units And Positioning Unit; List Of Data Processing Functions - Omron SmartSlice GRT1-OD4G-1 Operation Manual

Overview

7-1 Overview
7-1-1

Counter Units and Positioning Unit

7-1-2

List of Data Processing Functions

GRT1-CT1(-1) Counter Units and GRT1-CP1-L Positioning Units
Function
Counter Each Counter Unit or Positioning Unit provides one counter that oper-
ates according to the mode set by the user.
Digital I/O One input and one or two outputs can be used to control and monitor the
counter.
Comparison ranges A range can be set to control a digital output. When the counter value is
within the range, the output will turn ON or OFF according to the relation-
ship between the counter value and the comparison range. There is one
comparison range for each digital output.
Reset The counter can be reset by using the digital input or by using a user
command in I/O data.
Preset The counter can be preset to a specific value by using the digital input or
by using a user command in I/O data.
Capture The Present Counter Value can be stored in memory. The stored value
can be retrieved at any time. The counter value can be captured by
using the digital input or by using a user command in I/O data.
Z-reset The counter can be reset on the rising edge of the Z input according to
the user setting. The same input is shared between the Z input and the
digital input in the Counter Units, but separate Z and digital inputs are
provided in the Positioning Unit.
Counter frequency The frequency of the counter input pulse can be measured. The mea-
sured frequency is calculated as the Present Counter Value minus the
counter value from one second ago. The counter value is sampled every
0.1 s.
All sampled counter data is set to 0 or to the preset value when the
counter value is reset or preset, and the frequency measurement is
started again.
Action on bus error The action that is taken when a SmartSlice bus error occurs can be set.
The digital outputs can be cleared or maintain their normal functionality.
The counter continues to operate normally even when an error occurs.
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This section provides an overview of the GRT1-CT1 and GRT1-CT1-1
Counter Units and the GRT1-CP1-L Positioning Unit.
The GRT1-CT1(-1) Counter Units and GRT1-CP1-L Positioning Unit provide
special functions in addition to the backup, restore, and other functions com-
mon to GRT1-series Slice I/O Units. The special functions include counting
functions, counter value comparison ranges, and a digital input that can be
set to control the counter.
Counter data, such as the Present Counter Value or the value in the Preset
Value Register, can be assigned as I/O data along with status information.
The Setting Tool can be used to allocate status data, to set functions specific
to the Counter Units/Positioning Unit, and to perform monitoring.
The following table lists the data processing functions that can be used with
Counter Units and Positioning Units. Refer to 7-4-4 Functions and Settings
and 7-5-4 Functions and Settings for details on functions and setting meth-
ods.
Details
Section 7-1
Default
Always enabled.
IN: No action.
OUT, OUT0, and OUT1:
Assigned to comparison
ranges.
No ranges are set.
Disabled.
Disabled.
Disabled.
Disabled.
Always enabled.
Outputs cleared.