Registers; Types Of Registers - YASKAWA JEPMC-MP2300-Y Series User Manual

5.3 Registers

5.3.1 Types of Registers

( 1 ) DWG Registers
Type Name
System registers
S
Data registers
M
Input registers
I
Output registers
O
Constants
C
registers
# registers
#
D registers
D *
S and M register data has a battery backup to ensure the data is held even if the MP2300 power is turned
OFF and ON. Other register data is saved to flash memory, so when the MP2300 power is turned OFF to
ON, data saved to flash memory is read and data not saved to flash memory is lost.
It is recommended, therefore, that data to be held regardless of whether or not the power is turned OFF to
ON should be written to M registers if possible.
This section describes the types of registers used in MP2300 user programs (mainly ladder programs)
and how to use them.
Registers used by ladder programs (ladder drawings; DWG). Each drawing can use the registers out-
lined in the following table.
Specification Method
SB, SW, SL, SFnnnnn SW00000 to
(SAnnnnn) SW08191
MB, MW, ML,
MW00000 to
MFnnnnn
MW65534
(MAnnnnn)
IB, IW, IL, IFhhhh IW0000 to
(IAhhhh) IW13FFF
OB, OW, OL, OFhhhh OW0000 to
(OAhhhh) OW13FFF
CB, CW, CL, CFnnnnn CW00000 to
(CAnnnnn) CW16383
#B, #W, #L, #Fnnnnn #W00000 to
(#Annnnn) #W16383
DB, DW, DL,
DW00000 to
DFnnnnn
DW16383
(DAnnnnn)
n: Decimal number; h: Hexadecimal number
B, W, L, F, and A: Data type (B: Bit, W: Integer, L: Double-length integer, F: Real number, A:
Address. Refer to 5.3.2 Data Types and Register Specifications on page 5-24.)
* Up to 32 D registers (32 words, DW0000 to DW0031) can be used when creating drawings, but
this can be changed in the MPE720 Drawings Properties Window. Refer to the Machine Controller
MP900/MP2000 Series
(SIEPC88070005 ) for details.
Range
Registers provided by the system. SW00000 to
SW00049 are cleared to all zeros when the
system starts.
Registers shared by all drawings. Used, e.g., as
an interface between drawings.
Registers used for input data.
Registers used for output data.
Registers that can only be called from programs.
Call-only registers Can be called only by
corresponding drawing. The usage range is set
by the user using MPE720.
Internal registers unique to each drawing. Can be
used only by corresponding drawing.
The usage range is set by the user using MPE720.
User's Manual MPE720
Details Characteristics
Common to all
drawings
Unique to each
drawing
Software for Programming
5.3 Registers
Device
5-21