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3.4 I/O Signals for Programmable Controller CPU
3.4.2 I/O signals details
3
SPECIFICATIONS
3.4.2 I/O signals details
The following table shows the details of the I/O signals of the MES interface module.
(1) Input signals details
(To the next page)
Table 3.13 Input signals details
Device
No.
Signal name Description
X0 Module READY
Turns ON when the MES interface module becomes ready after the programmable controller is
powered ON from OFF or the programmable controller CPU is reset.
X1
CompactFlash card
status
(1) Turns ON when the CompactFlash card is installed and the file access status (X2) is OFF.
(2) Turns OFF when the CompactFlash card is not installed or the file access status (X2) is ON.
X2 File access status
(1) Turns ON while file access is stopped.
(a) The following operations are available while file access is stopped.
Removing and installing a CompactFlash card
( Section 4.7.2 Installation/removing the CompactFlash card)
Powering OFF the programmable controller during operation without battery
( Section 4.9 Operation without Mounting Battery)
(b) While file access is stopped, the following status occurs.
Reading from or writing to a CompactFlash card is disabled.
The MES interface function is suspended.
Operation from MES Interface Function Configuration Tool is disabled.
(2) Turns OFF during file access operation.
Powering ON the programmable controller from OFF or resetting the programmable controller
CPU brings file access in operation.
X4 Network status
(1) Turns ON when the MES interface module is initialized and became a connectable state.
(2) When powering ON from OFF or resetting the programmable controller CPU, the network of the
MES interface module is initialized.
Information linkage status (X5)
File access status (X2)
CompactFlash card status (X1)
(In operation) (During stop)
File access stop request (Y2)
Replace the CompactFlash card.
Power OFF the programmable controller.