Table of Contents
Advertisement
4. FUNCTIONS
(b) Preload remote OD
(2) Variables and data types
The following shows the relationship between the variables and data types that can be used by
the AJ71PB96F/A1SJ71PB96F remote OD and the device memory.
These can be thought of data that can be handled as a client by the AJ71PB96F/A1SJ71PB96F.
Boolean
Integer8
Integer16
Integer32
Unsigned8
Unsigned16
Unsigned32
Float
VisibleStr
OcteStr
Date
TimeOfDay
TimeDiff
BitStr
*1: Maximum 232 bytes (1856 bits)
*3: Maximum 232 elements
*5: Maximum 58 elements
*6: 1 element byte length x Number of elements ≤ 232 bytes, and 1 element is 232 bytes or less
*7: Maximum 8 elements
*8: Maximum 8 elements, however the total number of bytes is 232 bytes or less
In the above diagram the OD header (OD Object Description) records the OD's own
information.
If there is no vacant for the automatic remote OD when the remote OD is acquired, the
automatic remote OD of past acquired automatic remote ODs with the lowest frequency of
use is selected and overwritten.
When a connection is canceled, all the automatic remote ODs acquired by the canceled
connection are deleted.
The AJ71PB96F/A1SJ71PB96F has a function for automatically acquiring the remote ODs,
but depending on the conditions there are times when this function cannot be used. In such a
case the remote OD must be stored in advance in the AJ71PB96F/A1SJ71PB96F using the
SW0IX-PROFPE.
The preload remote OD must be set in the following cases.
(1) When operating as a client using the MSCY or MSCY_SI connection, the variable OD
Read/Write using this connection.
(2) The variable ODs for which there is a possibility of a notification from the partner
station using Information Report for all "/D" and "/I" connections.
Even if the connection is canceled, the preload remote ODs will not be deleted.
Simple variable
2
*
2
*
×
×
×
1
*
Array variable
Record variable
3
*
3
*
4
*
5
*
3
*
4
*
5
*
5
*
6
*
6
*
×
×
×
6
*
*2: Maximum 116 words
*4: Maximum 116 elements
4-16
MELSEC-A
7
*
7
*
7
*
7
*
7
*
7
*
7
*
7
*
8
*
8
*
×
×
×
8
*
Advertisement
Table of Contents
