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MELSEC-Q
7. SYSTEM CHECKING FROM PERIPHERAL DEVICE
Item Description
(PLC side)
Interface
Choose the type of the PLC to be connected.
Choose the CPU module, C24 connection, remote I/O or ladder logic test.
PLC type
When the CPU module was selected as the PLC side interface, choose the type of the
control PLC of the QD75 to communicate with.
Multiple PLC setting
When the CPU module was selected as the PLC side interface, choose the PLC No. of the
control PLC of the QD75 to communicate with in a multiple PLC system configuration.
The selection range is Non-choice, PLC No. 1, PLC No. 2, PLC No. 3 and PLC No. 4.
For a single PLC system configuration, choose "Non-choice".
Network Not supported by this software package.
I/O address Set the I/O address (starting I/O number) of the QD75 to be accessed in hexadecimal.
Wait time
Set the time-out period until the QD75 accepts a start or similar request from SW
D5C-
QD75P. When time-out occurs, the operating axes all stop.
Timeout time Set the suspension time of communication judged as a communication error.
• If you set the personal computer interfaces to the same COM port in SW D5C-
QD75P-E and SW
D5C-GPPW-E, set the baudrate to the same speed.
If they are started at the same time, the baudrate set first has priority and the
baudrate set later is ignored.
• If SW
D5C-QD75P-E is forced to end in the test mode, a time-out occurs due to
the elapse of the wait time and the QD75 cancels the test mode.
• A communications error may occur if communications are made with the QCPU
after setting of any of the resume function, suspend setting, power-saving function
and standby mode of the peripheral device. For this reason, do not set the above
functions when communicating with the QD75.
• If the USB cable is disconnected/connected, the QCPU is reset, or power is
switched on/off frequently during communications with the QCPU, a
communications error may occur and the QD75 may not recover from the error.
Hence, place the QD75 offline when disconnecting/connecting the USB cable,
resetting the QCPU, or switching power on/off.
If the QD75 does not recover from the communications error, completely
disconnect the USB cable once and reconnect it after more than 5 seconds has
elapsed. (An error may occur at the initial communications after this operation, but
the QD75 will function properly from the second time onwards.)
• A communication error may occur depending on the combination of the personal
computer model, USB cable and so on.
In that case, refer to the message displayed and perform operation again.
• If the baudrate is changed at the serial port of the personal computer (personal
computer interface) to perform fast communication, communications may not be
made or a communications delay may occur due to a communications retry
depending on the performance of the personal computer.
If communications cannot be made for fast communication, reduce the baudrate
and restart communication.