Mitsubishi MELSEC Q Series Handbook

4 INTELLIGENT COMMUNICATION MODULE REPLACEMENT
4 - 2
4.2.1 Module performance comparison
(1) Replacement of intelligent communication module AD51H-S3
: Compatible, : Partial change required, ×: Incompatible
4.2 Performance Specifications Comparison
Item
Specifications
Compat-
ibility
Precautions for replacement
AD51H-S3
QD51
QD51-R24
Programming language AD51H-BASIC
Number of tasks 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 programmamble controller CPU (This cannot
be performed when Compiler BASIC is used.)
• Start by start request from another task
Internal
memory
Program
384K bytes
(16/32/48/64K bytes selectable for
one task.)
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
8K bytes
Buffer
memory
6K bytes
Extension
relay (EM)
1024 points
Extension
register (ED)
1024 points
General input/output
Input: 27 points
Output: 26 points
(9 points: For task start from the PLC
CPU.)
Input: 26 points
Output: 23 points
(2 points: For task start from the PLC
CPU.)
×
Change I/O signals with a
program.
Memory protection
Yes
(Memory card write protectable)
Yes
(Flash ROM write protectable)
Interface
RS-232 2 channels
QD51: 2channels
QD51-R24: 1 channel
The cable connector must be
changed.
RS-422/485 1 channel
QD51: -
QD51-R24: 1 channel
Use the QD51-R24.
Parallel 1 channel - ×
Consider changing the external
devices to RS-232/RS-422
interface devices.
Memory card 2 slots - × Use CPU module devices.
Clock function None
Power failure protection None
User program in ROM
Possible
(64kWROM,128kWROM,
256kWROM)
Possible
(Stored in the built-in Flash ROM)
Console
•A7PHP
•A7HGP
•A7LMS
• VG-620
• VT-382
• IBM-PC/AT-compatible
personal computer
• IBM-PC/AT-compatible
personal computer
Use an IBM-PC/AT-compatible
personal computer.
The AD51H-BASIC software
package can be used with the
QD51(-R24). (This package can
be also used with the A series.)
Multitask debugging Possible (when a debugger is used.)
I/O points occupied
48 points
(The first 16 points are open and the
last 32 points are special.)
32 points ×
Change the start I/O No. in the
PLC parameter I/O assignment
setting.
No. of slots 2 slots 1 slot ×

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English