Replacement Of Intelligent Communication Module Ad51-S3 - Mitsubishi MELSEC Q Series Handbook

4
INTELLIGENT COMMUNICATION MODULE REPLACEMENT

(3) Replacement of intelligent communication module AD51-S3

The BASIC program of AD51-S3 is incompatible with that of QD51/QD51-R24. Analyze the existing
program to create a program with AD51H-BASIC.
Item
Programming language
Number of tasks
Task start conditions
Program
Common
memory
Internal
Buffer
memory
memory
Extension
relay (EM)
Extension
register (ED)
General input/output
RS-232
Interface
RS-422/485
Power failure protection
User program in ROM
Console
I/O points occupied
4
- 4
Specifications
AD51-S3
GPC-BASIC
Max. 8
• Start at power on
• Start by interrupt from the
programmable controller CPU
(Impossible when compiled BASIC
is run.)
• Start by a real time interrupt
Max. 64K bytes + 48K bytes (in
ROM)
2K bytes
6K bytes
-
-
Input: 13 points
Output: 10 points
2 channels
(Channels 1 and 2)
2 channels
(Channels 3 and 4)
Yes
Possible
(8K ROM/16K ROM)
• A6GPP
• A6PHP
• VG-620/670
Manufactured by Victor
• • •
Data Systems
48 points
: Compatible,
QD51
QD51-R24
AD51H-BASIC
2
• Start at power on
• Start by interrupt from the
programmamble controller CPU
(This cannot be performed when
Compiler BASIC is used.)
• Start by start request from another
task
Max. 64K bytes
(16/32/48/64K bytes selectable for
one task.)
8K bytes
1024 points
1024 points
Input: 26 points
Output: 23 points
QD51: 2channels
(Channels 1 and 2)
QD51-R24: 1 channel
(Channel 1)
QD51: -
QD51-R24: 1 channel
(Channel 2)
None
Possible
(Stored in the built-in flash ROM)
• IBM-PC/AT-compatible
personal computer
32 points
: Partial change required, ×: Incompatible
Compat-
Precautions for replacement
ibility
Change the BASIC program to
×
AD51H-BASIC.
Review the BASIC program, and
× reduce the number of tasks to
two or less.
When the task is started using a
real time interrupt, the condition
must be changed.
Review the BASIC program, and
× reduce the memory size to 64K
bytes or less.
-
-
Change I/O signals with a
×
program.
The cable connector must be
changed.
Use the QD51-R24.
×
Use an IBM-PC/AT-compatible
personal computer.
The software package for
starting up the system, which
was used on the AD51-S3,
cannot be used. Use the
AD51H-BASIC software
package supporting the QD51 (-
R24).
Change the start I/O No. in the
× PLC parameter I/O assignment
setting.