IDEC MicroSmart - Manual (Page 165)

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6: A
LLOCATION
N
UMBERS
Introduction
This chapter describes allocation numbers available for the MicroSmart to program basic and advanced instructions. Spe-
cial internal relays and special data registers are also described.
The MicroSmart is programmed using operands such as inputs, outputs, internal relays, timers, counters, shift registers,
and data registers.
Inputs (I) are relays to receive input signals through the input terminals.
Outputs (Q) are relays to send the processed results of the user program to the output terminals.
Internal relays (M) are relays used in the CPU and cannot be outputted to the output terminals.
Special internal relays (M) are internal relays dedicated to specific functions.
Timers (T) are relays used in the user program, available in 1-sec, 100-ms, 10-ms, and 1-ms timers.
Counters (C) are relays used in the user program, available in adding counters and reversible counters.
Shift registers (R) are registers to shift the data bits according to pulse inputs.
Data registers (D) are registers used to store numerical data. Some of the data registers are dedicated to special functions.
Operand Allocation Numbers
Available I/O numbers depend on the type of the MicroSmart CPU module and the combination of I/O modules. I/O mod-
ules can be used with only the 24-I/O type CPU module among all-in-one type CPU modules. All slim type CPU modules
can be used with I/O modules to expand the I/O points. For details of I/O, internal relay, and special internal relay num-
bers, see page 6-3.
All-in-One Type CPU Modules
Notes:
•
The least significant digit of input, output, internal relay, and special internal relay operand number is an octal number (0
through 7). Upper digits are decimal numbers.
•
The allocation numbers of expansion inputs and outputs star t with I30 and Q30, respectively.
•
Note that input and output allocation numbers are not continuous between the CPU module and expansion I/O modules.
•
The 24-I/O type CPU module (FC4A-C24R2 and FC4A-C24R2C) can add a maximum of 64 I/O points, and use a maximum
of 88 points of inputs and outputs in total.
Operand
FC4A-C10R2
FC4A-C10R2C FC4A-C16R2
FC4A-C16R2C FC4A-C24R2
FC4A-C24R2C
Allocation No. Points Allocation No. Points Allocation No. Points
Input (I) I0 - I5 6
I0 - I7
I10
9
I0 - I7
I10 - I15
14
Expansion Input (I) — — — — I30 - I107 64 (78 total)
Output (Q) Q0 - Q3 4 Q0 - Q6 7
Q0 - Q7
Q10 - Q11
10
Expansion Output (Q) — — — — Q30 - Q107 64 (74 total)
Internal Relay (M) M0 - M317 256 M0 - M1277 1024 M0 - M1277 1024
Special Internal
Relay (M)
M8000 - M8157 128 M8000 - M8157 128 M8000 - M8157 128
Shift Register (R) R0 - R63 64 R0 - R127 128 R0 - R127 128
Timer (T) T0 - T31 32 T0 - T99 100 T0 - T99 100
Counter (C) C0 - C31 32 C0 - C99 100 C0 - C99 100
Data Register (D) D0 - D399 400 D0 - D1299 1300 D0 - D1299 1300
Special Data
Register (D)
D8000 - D8099 100 D8000 - D8199 200 D8000 - D8199 200