M800/M80/E80 Series Maintenance Manual
4 Failure Diagnosis
84
IB-1501273-F
4.4.1.1 Displaying the PLC Device Data
The various status signals and register data used in the PLC can be monitored and displayed.
When this screen is first selected, the respective 16-byte amounts of input/output data are displayed from device "X0000"
on the left display area, and from device "Y0000" on the right side.
This screen constantly monitors and displays the PLC signal statuses. Consequently, when signals are changed in the PLC,
the display is changed according to the changes.
Note that because time differences occur between the PLC signal change and the signal display, there may be a delay in
the display. The machine may also not be able to correspond to extremely brief signal changes.
(1) When setting the device No., an error will occur if a number exceeding the specifications or an illegal address is set.
(2) The input/output signals of X, Y, R, and ZR are the same for all projects.
The valid area device Nos. change in page units when
/
is pressed. Changing of the pages stops within the range
of device numbers of which the device has.
Displaying the data of a arbitrary device No. "X0020"
(1)
Press the menu [Next Project].
The display is switched to the I/O signal of the next project.
(Press the menu key to switch the project in order. Note
that only projects are switched, but the device number cur-
rently displayed is not switched.)
(2)
Press the menu tab key
/
, and select the
area to display the data.
(3)
Set the device No. (X0020), and press the [INPUT]
key.
The device "X0020" appears at the head of the valid dis-
play area.
Changing the display with the page keys
(1)
Press the
key.
The data is displayed from the next number currently dis-
played.
The device number in
the top is not switched.
Note
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