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7. COMMUNICATION THAT DO NOT REQUIRE
THE SEQUENCE PROGRAM
7.1.12
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
• Subindex
[Server (AJ71PB96F/A1SJ71PB96F) answer parameters]
• Data
Reading program capacity and comment capacity, etc. (Read: Server)
Specify the index or name of the special array index registered in the OD.
Access Specification
Index
Variable Name
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.
The special array variable data format is as follows.
Element
Meaning
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
6
Sub microcomputer program capacity
7
Comment capacity
8
Extension comment capacity
9
File register capacity
Setting value
Index of the special array variable
Name of the special array variable
Data type
Unsigned16
7-16
MELSEC-A
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