Mitsubishi Electric MELSEC Q Series User Manual page 128

(3) USB cable fall-off prevention (Q24DHCCPU-V/-VG/-LS and Q26DHCCPU-LS)
USB cable(s) can be fixed to the C Controller module enclosure with a fixing band (recommended specifications:
Width: 6-9 mm and Thickness: 1mm or less).
Procedure
1
2
3
(4) Precautions
Precautions for use of USB cables:
• Do not activate the resume function, suspend setting, energy saving function and standby mode on the
Personal computer communicating with the C Controller module. Otherwise a communication error may
occur.
• Before inserting/removing a USB cable, resetting the C Controller module, or powering up/off, put connected
tool(s) in offline state. Frequent inserting/removing a USB cable, resetting the C Controller module, and
powering up/off during communication may cause an unrecoverable communicating error.
When operation is not recovered from an error, remove a USB cable. Then, connect it again after five or
more seconds. (Even after this operation, an error may occur at initial communication. However,
communication will be successful after that.)
• A communication error may occur depending on the combination of personal computers and USB cables.
126
Figure Description
A through hole for a fixing band
is prepared next to the PCI
®
Express connector at the
bottom of the C Controller
module.
• Let a fixing band through as
illustrated.
®
• When a PCI Express cable is
connected, disconnect the
®
PCI Express cable before
performing this task.
• Let a USB cable through the
fixing band to fix it.
• A knot of the fixing band
should face forward.
®
• Connect the PCI Express
cable back.