Devices In Detail; Device Number List - Mitsubishi Electric MELSEC-Q Structured Programming Manual

FXCPU Structured Programming Manual
[Device & Common]
2.

Devices in Detail

This chapter explains how numeric values are handled in the PLC as well as the roles and functions of
various built-in devices including I/O relays, auxiliary relays, state relays, counters and data registers.
The following contents provide a basis for handling the PLC.
2.1

Device Number List

Device numbers are assigned in the FX
The assignment varies depending on each PLC. For details, refer to the reference section.
For input relay numbers and output relay numbers when I/O extension equipment and special extension
equipment are connected to the PLC main unit, refer to the User's Manual [Hardware Edition] of each PLC.
Device name
I/O relay
Input relay
Output relay
Auxiliary relay
General type [changeable]
Latched (backed-up) type
[changeable]
Latched (backed-up) type [fixed]
*2
Special type
State relay
Initial state
(General type [changeable])
General type [changeable]
Latched (backed-up) type
[changeable]
Annunciator
(Latched (backed-up) type
[changeable])
Latched (backed-up) type [fixed]
Timer (on-delay timer)
100 ms
100 ms
[for subroutine or interrupt routine]
10 ms
Retentive type for 1 ms
Retentive type for 100 ms
1 ms
Counter
General type up-counter (16 bits)
[changeable]
Latched (backed-up) type up-
counter (16 bits) [changeable]
General type bidirectional counter
(32 bits) [changeable]
Latched (backed-up) type
bidirectional counter (32 bits)
[changeable]
and FX PLCs as shown below.
3U 3UC
X000 to X367 248 points
Y000 to Y367 248 points
M0 to M499 500 points
M500 to M1023 524 points
M1024 to M7679 6656 points
M8000 to M8511 512 points
S0 to S9 10 points
S10 to S499 490 points
S500 to S899 400 points
S900 to S999 100 points
S1000 to S4095 3096 points
T0 to T191 192 points
T192 to T199 8 points
T200 to T245 46 points
T246 to T249 4 points
T250 to T255 6 points
T256 to T511 256 points
C0 to C99 100 points
C100 to C199 100 points
C200 to C219 20 points
C220 to C234 15 points
Description
Device numbers are octal.
The total number of inputs and outputs is 256.
Devices can be changed between the latched
(backed-up) type and the non-latched type using
parameters.
Devices can be changed between the latched
(backed-up) type and the non-latched type using
parameters.
0.1 to 3276.7 sec
0.1 to 3276.7 sec
0.01 to 327.67 sec
0.001 to 32.767 sec
0.1 to 3276.7 sec
0.001 to 32.767 sec
0 to 32767 counts
Devices can be changed between the latched
(backed-up) type and the non-latched type using
parameters.
-2147483648 to +2147483647 counts
Devices can be changed between the latched
(backed-up) type and the non-latched type using
parameters.
2 Devices in Detail
2.1 Device Number List
1
2
3
4
Reference
Section 2.2
5
Section 2.3
Chapter 4
6
Section 2.4
7
Section 2.5
Section 2.6
35