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APPENDIX
APPENDIX
Appendix-1 Comparison of Functions with Previous Modules
Item
Cpu element
Arithmetic element
Programming language
Number of tasks
Task start conditions
Program
Internal
Common memory
memory
Buffer memory
Expansion relay (EM)
Expansion register (ED)
General input/output
Memory protection
RS-232
RS-422/485
Interfaces
Parallel
Memory card
App
Clock function
Power failure protection
User program in ROM
Console
Multitask debugging
I/o point share
Slot share
App - 1
A comparison of the QD51 (-R24)'s functions with the functions of previous modules is
shown.
AD51H-S3
80C186 (15 MHz)
8
• Start at power on
• Start by interrupt from the programmable controller CPU (Impossible when compiled programs
are run.)
• Start by start request from another task.
384 k bytes
(16/32/48/64 k bytes
selectable for one task.)
Input: 27 points
Output: 17 points
(8 points: For start from
the programmable
controller CPU)
Yes
(Memory card write
protectable)
2 channels
1 channel
1 channel
2 slots
Yes
Possible
• A7PHP
• A7HGP
• VG-620
• VT-382
• PC/AT personal computer
48 points
(The first 16 points are
open and the last 32
points are special.)
2 slots
A1SD51S
None
AD51H-BASIC
(Interpreter, compiler)
Max. 64 k bytes
(16/32/48/64 k bytes selectable for one task.)
8 k bytes
6 k bytes
1024 points
1024 points
Input: 27 points
Output: 23 points
(2 points: For task start
(2 points: For task start from the programmable
from the programmable
controller CPU)
Yes
(EEP-ROM write
Yes (Flash ROM write protectable)
protectable)
2 channels
None
Yes
Impossible
However EEP-ROM is
internal.
• A7LMS
• PC/AT personal computer
Possible (when a debugger is used.)
32 points
MELSEC-Q
QD51
QD51-R24
V53A (20 MHz)
2
Input: 26 points
Output: 23 points
controller CPU)
1 channel
1 channel
None
Impossible
However, Flash ROM is internal.
1 slot
App - 1
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