Specifications

59
Programming Software
MELSEC MEDOC plus is the programming software for all
MELSEC series PLCs. This software has been developed to
improve productivity of programming by incorporation of
IEC61131 standards.
The requirements to PLC controlled machinery and equip-
ment are becoming more sophisticated. Also, PLC programs
are becoming larger and more complicated. This results in
a longer time required for PLC programming. In addition,
large programs are not only a problem for designers, but
also for maintenance people. They have to read and
understand large PLC programs. Everybody wants to reduce
programming time, and split large programs into several
modules for easy understanding.
This software, compliant with the IEC61131 standard, pro-
vides an environment of structured programming. This
allows large programs consisting of several programming
modules to be constructed. In addition, compatibility with
Windows provides a user friendly environment.
■
MELSEC MEDOC plus, IEC compatible programming software
■ IEC61131 compatible
MELSEC MEDOC plus is compatible with the programming
methods stated in IEC61131 standards. Functions such as
programming language, ladder, instruction list, function
block diagram, user defined function, and sequential flow
chart are all provided. Because this software is designed to
comply with pre-defined standards and programming
principles, even users who are not familiar with MELSEC
programming and language can use this software with a
minimum amount of PLC hardware knowledge.
■ Structured programming
Sequential flow chart and task constructions of the software
allow a large program consisting of multiple program
modules based on each machine operation. Since each
program module is fairly small, they are easier to
understand and debug than if the entire program had to be
dealt with.
■ Compatible CPUs
MELSEC MEDOC plus is compatible with the following
MELSEC Series PLCs.
FX
0/FX0N/FX/FX2C/FXU/FX0S/FX2NC/FX2N
A1S(S1)/A2S(S1)/A1SH/A1SJH/A2SH(S1)
A2AS(S1)/A2US(S1/S30/S60)/A2A(S1)/A3A
A2U(S1)/A3U/A1N/A2N/A3N/A2C
Q2A(S1)/Q2AS(S1)/Q3A/Q4A/Q4AR
Includes QnA(S)CPU H-types.
■ Program library
Once a program module is created for a project, the module
can be stored in a library. When a projects similar to one
created previously, pre-made program blocks can be re-
used. This feature not only reduces program development
time, but also reduces programming errors and debugging
because proven modules are used.
■ Password protection
Multiple levels of passwords can be registered in a program
providing protection from tampering.
■ MELSEC compatible mode
For users who are familiar with MELSEC programming and
want to continue this programming method, the software
offers a MELSEC compatible mode. With this mode, the
users can write a program with the MELSEC instruction set.
OS Windows 3.1 Windows 95/98 WindowsNT
CPU 386DX or high (Recommended Pentium or higher)
Memory 4MB (Recommended 16MB) Recommended 32MB Recommended 64MB
Hard Disk 20MB free 40MB free 40MB free
Monitor VGA compatible graphics adapter (Recommended: 1024×768, 256 colors)
Other Mouse, Serial port ×1, printer port and printer, CD-ROM drive
■ Hardware requirements
RyansElectric.com