7. COMMUNICATION THAT DO NOT REQUIRE
THE SEQUENCE PROGRAM
MELSEC-A
7-16
7.1.12 Reading program capacity and comment capacity, etc. (Read: Server)
The client issues a "Read" service to read the PC CPU program capacity, comment capacity,
extension comment capacity, and file register capacity.
To read these capacities they must be registered ahead of time in the OD as special array variables
using the software package.
[Parameters required by the client]
•
Access Specification
Specify the index or name of the special array index registered in the OD.
Access Specification
Setting value
Index Index
of
the
special
array
variable
Variable Name
Name of the special array variable
•
Subindex
This specifies which element will be read.
When a Subindex is not specified all of the elements will be read.
The Array header element Subindex is 1.
[Server (AJ71PB96F/A1SJ71PB96F) answer parameters]
•
Data
The special array variable data format is as follows.
Element
Meaning Data
type
1
Main sequence program capacity
2 Sub
sequence
program
capacity
3
Sub sequence program 2 capacity
4
Sub sequence program 3 capacity
5
Main microcomputer program capacity
Unsigned16
6 Sub
microcomputer
program
capacity
7 Comment
capacity
8 Extension
comment
capacity
9 File
register
capacity
