Omron SmartSlice GRT1 Series

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GRT1-CT1(-1) Counter Units Section 7-4
7-4-2 Hardware
Names and Functions of Parts
LED Indicators The indicators on the front of the Counter Units are shown below.
TS Indicators
The green and red TS indicators show the status of the Slice I/O Unit itself. Refer to 2-
1-3 LED Indicators for details.
I/O Indicators
The I/O indicators show the status of the counter inputs and digital I/O.
CT1
Terminal
Block
LED Indicators
Display Unit status.
Test Pins
Terminal Insertion Holes
Release Buttons
Name Color Indicator status I/O status
A Yellow Lit Input A is ON.
Not lit Input A is OFF.
B Yellow Lit Input B is ON.
Not lit Input B is OFF.
Z/I Yellow Lit Input Z or digital input is ON.
Not lit Input Z or digital input is OFF.
O Yellow Lit The digital output is ON.
Not lit The digital output is OFF.
CT1
CT1-1