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PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
5 Operation Test
5.1 Test Procedure
B - 84
9 Check the operation of the forward rotation limit switch.
During operation in the forward rotation direction (at step 8), turn off the forward rotation limit switch
1 (X010), and confirm that the operation in the forward rotation direction is stopped.
The LED indicator lamps and the current value register (D8341, D8340) will enter the same
statuses as the stop statuses described in step 8.
In addition, the "Instruction execution abnormal end" flag (M8329) will turn on.
→ For details on the current value register, refer to Subsection 4.4.1.
10 Check the operation in the reverse rotation direction.
Check the output indicator lamp (LED lamp) and the current value register to monitor the operation.
The status of the LED indicator lamp and the value indicated in the current value register depend
on the pulse output destination or rotation direction set by the positioning instruction. However, if
the pulse output destination or the rotation direction is changed for the test program, carefully read
the status of the output indicator lamp (LED lamp) and the value indicated in the current value
register to monitor the change.
1. Operation in reverse rotation direction
Turn on the reverse rotation (JOG-) switch (X013), and verify that the operation is performed in the
reverse rotation direction. For this check, set the other inputs as follows:
1) LED indicator lamp check
Check the LED indicator lamps of the PLC or the display module to check whether the outputs are turned
on. The status of each output should be as shown in the following table:
2) Current value register (D8341, D8340) check
Monitor the current value register (D8341, D8340) of the FX
3U/FX3UC/FX3G PLC using the programming
tool, and confirm that the value is being reduced.
→ For details on the current value register, refer to Subsection 4.4.1.
Input signal Status
X010 ON
X011 ON
X012 OFF
Pulse output
method
LED lamp
of output
Status of LED lamp (output)
If transistor outputs of the
main unit are used
"Pulse train + direc-
tion" method
Y000 Turned on and off at high speed.
Y004 Kept OFF.
If high-speed output
special adapter is used
"Pulse train + direc-
tion" method
Y0/2 Turned on and off at high speed.
Y4/6 Kept OFF.
Forward rotation
pulse train (FP)
Reverse rotation
pulse train (RP)
Y0/2 Kept OFF.
Y4/6 Turned on and off at high speed.