IDEC MICRO3 User Manual

USER’S MANUAL 6-1
6: ALLOCATION NUMBERS
Introduction
This chapter describes allocation numbers available for the MICRO
3
base unit to program basic and advanced instructions.
Special internal relays are also described.
The
MICRO
3
programmable controller 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
MICRO
3
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 100-msec, 10-msec, and 1-msec timers.
Counters (C) are relays used in the user program, available in reversible counters and adding 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.
Allocation Numbers
Available I/O numbers depend on the type and combination of the MICRO
3
base units used in the expansion link system.
For details of available I/O numbers in the expansion link system, see page 4-7.
Notes:
Input and output allocation numbers for the expansion station start with I20 and Q20. Note that input and output allocation
numbers are not continuous between the base station and expansion station in the expansion link system.
The maximum points shown in ( ) are values for the high-speed processing mode.
The same number cannot be used for a counter and a timer in a user program.
Operand Processing Mode Allocation Number Maximum Points
Input
Standard and
High-speed
I0 - I7 I10 - I15
14 points (Base)
+
14 points (Expansion)
Standard only I20 - I27 I30 - I35
Output
Standard and
High-speed
Q0 - Q7 Q10 - Q11
10 points (Base)
+
10 points (Expansion)
Standard only Q20 - Q27 Q30 - Q31
Internal Relay
Standard and
High-speed
M0 - M7 M10 - M17 M20 - M27
M30 - M37 M40 - M47
232 points
(40 points)
Standard only
M50 - M57 M60 - M67 M70 - M77
M80 - M87 M90 - M97 M100 - M107
M110 - M117 M120 - M127 M130 - M137
M140 - M147 M150 - M157 M160 - M167
M170 - M177 M180 - M187 M190 - M197
M200 - M207 M210 - M217 M220 - M227
M230 - M237 M240 - M247 M250 - M257
M260 - M267 M270 - M277 M280 - M287
Catch Input Relay
Standard and
High-speed
M290 - M297
8 points
(8 points)
Special Internal Relay
Standard and
High-speed
M300 - M307 M310 - M317
16 points
(16 points)
Timer
Standard and
High-speed
T0 - T15
32 points total
(16 points total)
Standard only T16 - T31
Counter
Standard and
High-speed
C0 - C15
Standard only C16 - C31
Shift Register
Standard and
High-speed
R0 - R31
64 points
(32 points)
Standard only R32 - R63
Data Register
Standard and
High-speed
D0 - D31
100 points
(32 points)
Standard only D32 - D99
◆ For the MICRO
3
C, see the MICRO
3
C User’s Manual. ◆

IDEC MICRO3 Specifications

General

Brand	IDEC
Model	MICRO3
Category	Controller
Language	English