Download  Print this page

Devices; Device List - Mitsubishi Electric MELSEC-A Series User Manual

Hide thumbs

Advertisement

4.A2CCPU
- - - - - - - - - - - - - - - - - - - - - MELSEC·A
4.5
Devices
Devices indicate contacts, coils, timers, etc. used in the PC program opera-
I
tion.
4.5.1
Device list
Table 4.11 shows the devices and their ranges to be used with the PC.
Devices indicated with an asterisk (*) can be set as appropriate by setting
the ranges with parameters using a peripheral device.
For details of parameter setting, see Section 4.4.
Table 4.11 Device List
Device
Application Range (Number of pointe)
Explanat.lon
Provides PC command and data from external
X
Input
device, e.g. pushbutton, select switch, limitswitch,
digital switch.
X, YO to 1FF (Number of X
+
Y
=
512)
Provides program control resultto external device,
Y
Output
e.g. solenoid, magnetic switch, aignallight, digital
display.
Special relay
M9000 to 9255 (256)
Predefined auxiliary relay for special purpose and
for use in the PC.
f--
M
Internal relay
MOto 999 (1000)
Auxiliary relay in the PC which cannot be output
directly.
L
Latch relay
Ll000 to 2047 (1048)
Number of
Auxiliary relay in the PC which cannot be output
Ms
+
Ls
+
directly. Backed up during power failure.
S.
=
2048
Can be used by setting
Used in the same manner as an Internal relay (M),
S
Step relay
e.g. as a relay indicating the stage number of a
the parameter (0)
step-by-step process operation program.
Internal relay for data link which cannot be output.
B
Link relay
BOto 3FF (1024)
May be used as an internal relay if not set for link
parameter.
Used to detect a fault. When switched on during
F
Annunciator
FOto 255 (256)
RUN by a fault detection program, stores a
corresponding number in special register D.
100 msec timer
TO to 199 (200)
*
T
10 msec timer
T200 to 255 (56)
Up timers available in 100 msec, 10 rnsec and 100
msec retentive types.
100 msec
Can be used by setting the
retentive timer
paramater. (0)
C
Counter
CO to 255 (256)
Up counters available in normal and interrupt
typee.
Data register
DO to 1023 (1024)
Memory for storing PC data.
-
0
Special
09000 to 9255 (256)
Predefined data memory for special purpose.
register
W
Link register
WOto 3FF (1024)
Data register for use with data link.
Can be used by setting the
Used for data link. In the ranger which In not set
R
File register
by link parameters, file registers can be used as
parameter. (0)
data registers
4-58

Advertisement

Table of Contents

   Also See for Mitsubishi Electric MELSEC-A Series

   Related Manuals for Mitsubishi Electric MELSEC-A Series

Comments to this Manuals

Symbols: 0
Latest comments: