Plc Interface - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.33 PLC Axis Control

14.33.3 PLC Interface

The PLC and NC interface is carried out by turning ON the PLC axis control valid signal or the PLC axis control buffering
mode valid signal after the PLC sets the control information data in the R register.
The operation is executed in single mode if the "PLC axis control valid" signal is ON. On the other hand, it is executed in
buffering mode if the "PLC axis control buffering mode valid" signal is ON.
Single mode and buffering mode cannot be operated simultaneously. An alarm (command mode overlap) occurs when the
valid signal of either mode is turned ON while the other mode is operating. Note that the alarm does not cancel the operation
in the first active mode.
Refer to "14.33.8 Single Mode" and "14.33.9 Buffering Mode" for the details of each mode. For the details of alarms, refer to
"14.33.4 Details of PLC Axis Control Information Data".
 PLC axis control valid signal
The PLC axis control process is executed in single mode with the control information data while the PLC axis control valid
signal is ON.
The reset state is activated when the PLC axis control valid signal is turned OFF. In this case, the axis control is reset only
once; when the ON signal is turned OFF.
Signal name
PLC axis control valid
 PLC axis control buffering mode valid signal
When the PLC axis control buffering mode valid signal is ON, the PLC axis control is executed upon the control information
data in buffering mode.
If the PLC axis control buffering mode valid signal is turned OFF, the axis control is reset. In this case, the axis control is reset
only once; when the ON signal is turned OFF.
Signal name
PLC axis control buffering
buffering mode valid
 PLC axis control information address
The PLC axis control information address stores head R registers of the control information for each PLC axis.
Signal name
PLC axis control information
address
Note
(1) The following R registers can be used.
R8300 to R9799 (Area backed up by battery)
R9800 to R9899 (Area not backed up by battery)
R18300 to R19799 (Area backed up by battery)
R19800 to R19899 (Area not backed up by battery)
R28300 to R29799 (Area backed up by battery)
R29800 to R29899 (Area not backed up by battery)
(2) If the setting value of R register is out of range or odd number, the target PLC axis turns invalid.
(3) In the following explanations, the R register Nos. stored in the PLC axis control information address are indicated as R1n
for the 1st axis, R2n for the 2nd axis, R3n for the 3rd axis, and R4n for the 4th axis, R5n for the 5th axis, R6n for the 6th
axis.
1st axis 2nd axis 3rd axis
Y770 Y771 Y772
Common for all axes
Y723
1st axis 2nd axis 3rd axis
R440 R441 R442
PLC axis No.
4th axis 5th axis 6th axis
Y773 Y774 Y775
PLC axis No.
4th axis 5th axis 6th axis
R443 R444 R445
803
7th axis 8th axis
Y776 Y777
7th axis 8th axis
R446 R447
IB-1501668-B