168
Chapter 5
Troubleshooting
How to extinguish error indicator
Before canceling the error, be sure to confirm the details of the error, and then turn off the power.
After power-off, be sure to eliminate the cause of the error, and then turn on the power again.
If the power is not turned off, a serious problem may occur.
WARNING
To stop the error indicator from blinking, or to erase the error number displayed on the address display, check
that the mode selection switch is set to ‘RUN,’ and then press the , , and ENTER buttons at the same time.
However, if the cause of the error is not eliminated, pressing the above buttons will not extinguish the error indi-
cator.
If the
SL-VFP2
,
SL-VMEL-Q
,
SL-VPCI
,
SL-VVMES2
,
SL-VGU1-C
,
SL-VGU1-D
,
SL-VGU1-EC
, or
SL-VGU1-485
is adopted, also use the software function to extinguish the error indicator.
Utilization of output holding function
Before setting the output holding function, be sure to fully understand the details of this function.
If the output holding function is not activated, a serious problem may occur.
WARNING
Select the output unit operation for the output holding function. If a transmission error occurs, the output unit will
operate in accordance with the selected operation. However, if the power is not supplied to the output unit, the
output holding function will not be activated. If the normal transmission is restarted, normal operation will be per-
formed.
●
Output holding function: ON
• If a transmission error is detected, the output conditions detected just before occurrence of the error will be
held.
●
Output holding function: OFF
• If a transmission error is detected, all the outputs will be turned off.
Examples of use:
<Output holding function: ON>
• Use this function if the transfer unit uses the vacuum pick-up function.
• Use this function if a manifold is used for operation of the pressure unit.
• Use this function if non-holding of the current conditions may damage the machine (workpieces).
<Output holding function: OFF>
• Use this function if a transfer unit is adopted to perform line transfer operation.
• Use this function if a motor is adopted as the drive unit.
• Use this function if the items being transferred will be obstacles at resetting operation.
We have predicted the cases that need this function, and listed above as examples.
However, to actually set the output holding function for your system, consider the environ-
mental conditions of your system.
NOTE
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