Problems with communication with I/O units
Maintenance/Troubleshooting
1-86
Is the USB-Serial (RS-232C) conversion cable directly connected to the Display?
Cause
If the cable is directly connected to the Display, it may not be the cable that Pro-face rec-
ommends, or the modem settings may be incorrect. If the USB-Serial (RS-232C) con-
version cable is connected to the USB hub, electric power from the USB hub may not
have been sufficient.
Solution
Correct the problem according to the following procedure:
• When the USB-Serial (RS-232C) conversion cable is directly connected to the Display
(1) Visit the “Otasuke Pro!” support site and check if your USB-Serial (RS-232C) conversion
cable is the one that Pro-face recommends.
http://www.pro-face.com/otasuke/
(2) Check the following section.
)
“1.2.3 Project files cannot be transferred n Transfer fails when a modem is used.”
• When the USB-Serial (RS-232C) conversion cable is not directly connected to the
Display
(1) Connect the USB-Serial (RS-232C) conversion cable directly to the Display. If the USB-
Serial (RS-232C) conversion cable is properly recognized, electric power from the USB hub
may not have been sufficient. Use the powered USB hub and supply sufficient electric
power. Also, check if the powered USB hub complies with the Universal Serial Bus 1.1 or
later.