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PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13 Troubleshooting
13.1 LED Indicator Lamp Check
B - 173
A
Common Items
B
Built-in
Positioning
Functions
Apx.
Example
Connection
13.1.6 Pulse Output Destination Device and Rotation Direction Output Indicator Lamp
1. If transistor outputs from the main unit are used for positioning
Signal
LED status during
execution of
positioning
instruction
Description
"Pulse output
destination
device" (pulse
train) signal
Turned on and off at
high speed
The pulse outputting operation is controlled by the positioning instruction.
OFF
The PLC may exhibit the following status:
1) The operation of the positioning instruction is completed.
2) The positioning instruction turns ON, but an operation error is detected.
The instruction, therefore, is not being executed. To check the error,
refer to the following section:
→ Refer to Subsection 13.2.1 "Error code check method".
"Rotation
direction output"
(direction) signal
ON Operation is being performed in the forward rotation direction.
OFF
The PLC may exhibit the following status:
1) The positioning instruction turns ON, and operation is being performed
in the reverse rotation direction.
2) The positioning instruction turns ON, but an operation error is detected.
The instruction, therefore, is not being executed. To check the error,
refer to the following section:
→ Refer to Subsection 13.2.1 "Error Code Check Method".