Registers; Types Of Register - YASKAWA MP2100 Series User Manual

6.4 Registers

This section explains the types of register used by MP2100/MP2100M user programs (mainly ladder programs)
and how these registers are used.

6.4.1 Types of Register

(1) Registers in Drawings
The registers shown in the following table can be used in all drawings.
Type Name
S System
registers
M Data registers
I Input registers
O Output
registers
C Constant
registers
# registers
＃
D D registers
Designation Method Range
SB, SW, SL, SFnnnnn SW00000 to
(SAnnnnn) SW08191
MB, MW, ML, MFnnnnn MW00000 to
(MAnnnnn) MW65534
IB, IW, IL, IFhhhh IW0000 to
(IAhhhh) IW13FF
OB, OW, OL, OFhhhh OW0000 to
OW13FF
(OAhhhh)
CB, CW, CL, CFnnnnn CW00000 to
(CAnnnnn) CW16383
#B, #W, #L, #Fnnnnn #W00000 to
(#Annnnn) #W16383
DB, DW, DL, DFnnnnn DW00000 to
(DAnnnnn) DW16383
Description
System registers provided by the system.
Register number nnnnn is expressed as a
decimal number. When the system is
started, SW00000 to SW00049 are
cleared to 0.
Data registers are shared by all drawings.
Used as interfaces between drawings.
Register number nnnnn is expressed as a
decimal number.
Registers used for input data.
Register number hhhh is expressed as a
hexadecimal number.
Registers used for output data.
Register number hhhh is expressed as a
hexadecimal number.
Constant registers can be read only in the
program. Register number nnnnn is
expressed as a decimal number.
# registers can be read only in the corre-
sponding drawing. The actual range used
is specified by the user on the MPE720.
Register number nnnnn is expressed as a
decimal number.
D registers are unique to each drawing
and can be used only in the correspond-
ing drawing. The actual range used is
specified by the user on the MPE720.
Register number nnnnn is expressed as a
decimal number.
6.4 Registers
Charac-
teristic
Common
to all
drawings
6
Unique to
each
drawing
6-21