Registers; Operation Memory Area; Chapter 9 Registers - Panasonic ELC500 User Manual

Chapter 9

Registers

9.1

Operation Memory Area

Name
External input X
External output Y
Internal relay R
Link relay L
Timer
Counter C
System relay SR
Pulse relay
Error alarm relay E
Direct input IN
Direct output OT
External input WX
External output WY
Internal relay WR
Link relay WL
Data register DT
Link register LD
Unit memory UM
System data SD
register
Usable devices and ranges
8,192 points (X0 to X511F) *1
8,192 points (Y0 to Y511F) *1
32,768 points (R0 to R2047F)
*2 *3
16,384 points (L0 to L1023F) *2
T 4,096 points (T0 to T4095) *2
1,024 points (C0 to C1023) *2
Approx. 1,120points
(approx. 70 words)
P 4,096 points (P0 to P255F)
4,096 points (E0 to E4095)
Can allocate input numbers to
each slot (IN0 to IN62F) *4
Can allocate output numbers to
each slot (OT0 to OT62F) *4
WX0 to WX511 *1
WY0 to WY511 *1
WR0 to WR2047 *2*3
WL0 to WL1023
Max. DT 262,144 words
(DT0 to DT262143) *2*5
16,384 words
(LD0 to LD16383) *2
Max. 512K words per unit *4
Approx. 110 words
Turns on or off based on external input.
Externally outputs on or off state.
Relay which turns on or off only within
program.
This relay is a shared relay used for PLC link.
This goes on when the timer reaches the
specified time.
This goes on when the timer increments.
Relay which turns on or off based on specific
conditions and is used as a flag.
This relay only turns on during one scan at
the start of the execution condition.
This relay ensures that error conditions that
are freely allocated by the user are
memorized in the memory.
This relay is for input/output processing
during operation, without depending on usual
I/O refresh.
Code for specifying 16 external input points
as one word (16 bits) of data.
Code for specifying 16 external output points
as one word (16 bits) of data.
Code for specifying 16 internal relay points
as one word (16 bits) of data.
Code for specifying 16 link relay points as
one word (16 bits) of data.
Data memory used in program.
Data is handled in 16-bit units (one word).
This is a shared data memory which is used
within the PLC link. Data is handled in 16-bit
units (one word).
This device is for accessing the unit memory
of intelligent units. Its size varies by unit, and
is allocated by default.
Data memory for storing specific data.
Various settings and error codes are stored.
168
ELC500 Control unit
Functions