Mitsubishi A1SJH(S8) User Manual page 66

4. CPU MODULE
Device
R *File register
A Accumulator
Z
Index register
V
N Nesting
P Pointer
I Interrupt pointer
K Decimal constant
H Hexadecimal
REMARK
Device list (Continued)
Usage Range (points)
A1SJHCPU(S8) A1SHCPU
R0 to R8191 (8192 points)
A0, A1 (2 points)
V, Z (2 points)
N0 to N7 (8 levels)
P0 to P255 (256 points)
I0 to I31 (32 points)
K-32768 to K32767 (16-bit instruction)
K-2147483648 to K2147483647 (32-bit
instruction)
H0 to HFFFF (16-bit instruction)
H0 to HFFFFFFFF (32-bit instruction)
The step relay in the above list can be used in the same manner as the internal
relay (M). For the program creation with two kinds of functions in one program,
it is usable to divide the step relay (S) and internal relay (M) into a category of
such as a function and usage in using.
A2SHCPU(S1)
For the data register expansion. User memory area is used for
this.
Data register that stores a operation result of basic and
application instructions.
Used for qualification of devices (X, Y, M, L, B, F, T, C, D, W, R,
K, H, P)
Indicates nesting structure of a master control.
Indicates destination of the branch instructions (CJ, SCJ,
CALL, JMP).
When an interruption factor is generated, indicates the
destination of the interrupt program corresponding to the
interruption factor.
Used to set timer/counter, pointer number, interrupt pointer
number, bit device digits, and values for basic and application
instructions.
Used to the set values for basic and application instructions.
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Description of Device