Mitsubishi MELSEC Q Series Handbook

4 INTELLIGENT COMMUNICATION MODULE REPLACEMENT
4 - 4
(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.
: Compatible, : Partial change required, ×: Incompatible
Item
Specifications
Compat-
ibility
Precautions for replacement
AD51-S3
QD51
QD51-R24
Programming language GPC-BASIC AD51H-BASIC ×
Change the BASIC program to
AD51H-BASIC.
Number of tasks Max. 8 2 ×
Review the BASIC program, and
reduce the number of tasks to
two or less.
Task start conditions
• Start at power on
• Start by interrupt from the
programmable controller CPU
(Impossible when compiled BASIC
is run.)
• Start by a real time interrupt
• 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
When the task is started using a
real time interrupt, the condition
must be changed.
Internal
memory
Program
Max. 64K bytes + 48K bytes (in
ROM)
Max. 64K bytes
(16/32/48/64K bytes selectable for
one task.)
×
Review the BASIC program, and
reduce the memory size to 64K
bytes or less.
Common
memory
2K bytes 8K bytes
Buffer
memory
6K bytes
Extension
relay (EM)
- 1024 points -
Extension
register (ED)
- 1024 points -
General input/output
Input: 13 points
Output: 10 points
Input: 26 points
Output: 23 points
×
Change I/O signals with a
program.
Interface
RS-232
2 channels
(Channels 1 and 2)
QD51: 2channels
(Channels 1 and 2)
QD51-R24: 1 channel
(Channel 1)
The cable connector must be
changed.
RS-422/485
2 channels
(Channels 3 and 4)
QD51: -
QD51-R24: 1 channel
(Channel 2)
Use the QD51-R24.
Power failure protection Yes None ×
User program in ROM
Possible
(8K ROM/16K ROM)
Possible
(Stored in the built-in flash ROM)
Console
•A6GPP
•A6PHP
• VG-620/670
• • •
• IBM-PC/AT-compatible
personal computer
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).
I/O points occupied 48 points 32 points ×
Change the start I/O No. in the
PLC parameter I/O assignment
setting.
Manufactured by Victor
Data S
y
stems

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English