Wx, Wy, Wr, Wl - Panasonic FP7 Series Command Reference Manual

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Types of system data registers (SD)
Classification
Environment settings,
operation status
Description of error
Calendar timer

2.6.7 WX, WY, WR, WL

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How WX, WY, WR, WL works
● Relays (X, Y, R, L) can be handled as blocks of 16 points.
● Pulse relays (P) and error alarm relays (E) cannot be handled in word units.
● These are one-word (16-bit) memory areas, thus they can be treated as data memory.
● The composition of the word-unit memory areas is shown below. Each element has a
corresponding number, as shown below.
WR0
RF RE
WR1
R1F R1E •
WR2
R2F R2E •
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WX, WY, WR, WL usage example
● WX and WY can be used for reading the input from intelligent units and for the external input/
output in word units.
● WR can also be used as a shift register.
WUME-FP7CPUPGR-12
Function
The operation statuses of the PLC specified with the configuration data and the various
types of instructions are stored.
Example) Scan time
Information such as information of a unit in which an abnormality occurred is stored.
Example) Self-diagnostic error code, slot number of the unit in which the abnormality
occurred, the address where the operation error occurred
The year, month, day, hour, minute, second, and day of the week tracked by the
calendar timer are stored here.
RD RC RB RA R9 R8 R7 R6 R5 R4 R3 R2
• • • •
• • • •
2.6 Description of the memory area
• • • • • •
• • • • • •
R1 R0
R12 R11 R10
R22 R21 R20
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