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Appendix A Com m unic ation Sett i n g
A-7
Setting communication parameters for USB (virtual COM)
If users want to connect a USB port on a computer to a PLC, they have to make sure of the
items below before opening the Driver Properties window.
(a) A USB driver is installed on the computer.
(b) The computer is connected to the PLC through a USB cable. The computer and the PLC
operate normally.
(1) Users can type a driver name in the Driver Name box. Special marks can not be used
except _.
(2) Select USB (Virtual COM) in the Type drop-down list box in the Connection Setup
section.
(3) Select a communication port in the COM Port drop-down list box. If users have made sure
of the two items above, the PLC which is connected and its communication port will be
displayed in the COM Port drop-down list box.
(4) Users can select the number of times the sending of a command is retried if a connection
error occurs in the Time of Auto-retry box, and select an interval of retrying the sending of
a command in the Time Interval of Auto-retry box.
*. Please refer to section A.2 or appendix A in ISPSoft User Manual for more information about installing a USB
driver.
Setting communication parameters for DirectLink (USB)
(1) Users can type a driver name in the Driver Name box. Special marks can not be used
except _.
(2) Select DirectLink (USB) in the Type drop-down list box in the Connection Setup section.
(3) Users can select the number of times the sending of a command is retried if a connection
error occurs in the Time of Auto-retry box, and select an interval of retrying the sending of
a command in the Time Interval of Auto-retry box.
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