Delta AH500 Hardware Operation Manual

AH500 Hardware and Operation Manual
5-4
Type
Device name
Number of devices
Range
String*
String
“$”
1~31 characters
*1: The decimal forms are notated by K in the device lists in Chapter 5 and Chapter 6 in AH500 Programming
Manual, whereas K50 should be inputted in ISPSoft rather than merely 50.
*2: The floating-point numbers are notated by F/DF in the device lists in Chapter 5 and Chapter 6 in AH500
Programming Manual, whereas they are represented by decimal points in ISPSoft; for the floating-point
F500, one should input 500.0.
*3: The strings are notated by “$” in Chapter 5 and Chapter 6 in AH500 Programming Manual, whereas they
are represented by “ ” in ISPSoft; for the string of 1234, one should input “1234”in ISPSoft.
5.1.2 Basic Structure of I/O Storages
Device Function
Access of
bits
Access of
words
Modification by
ISPSoft
Forcing the bit
ON/OFF
X
Input relay
OK
OK
OK
OK
Y
Output relay
OK
OK
OK
OK
M
Auxiliary relay
OK
-
OK
NO
SM
Special auxiliary
relay
OK - OK NO
S
stepping relay
OK
-
OK
NO
T
Timer
OK
OK
OK
NO
C
Counter
OK
OK
OK
NO
HC
32-bit counter
OK
OK
OK
NO
D
Data register
OK
OK
OK
NO
SR
Special data register
-
OK
OK
NO
L
Link register
OK
OK
OK
NO
E
Index register
-
OK
OK
NO
5.1.3 Relation Between the PLC Action and the Device Type
Device type
PLC action
Non-latched
area
Latched
area
Output relay
Power: OFF→ON
Cleared
Retained
Cleared
STOP
↓
RUN
The output relay is cleared.
Retained
Retained
Cleared
The state of the output relay
is retained.
Retained Retained Retained
The state of the output relay
returns to that before the
PLC’s stopping.
Retained Retained
Refer to the settings of
device Y
The non-latched area is
cleared.
Cleared Retained
Refer to the settings of
device Y
The state of the latched area
is retained.
Retained Retained Retained
RUN→STOP
Retained
Retained
Retained
SM204 is ON.
(All non-latched areas are cleared.)
Cleared Retained Cleared
SM205 is ON.
(All latched areas are cleared.)
Retained Cleared Retained
Default value
0
0
0

Delta AH500 Specifications

General

Brand	Delta
Model	AH500
Category	Controller
Language	English