5
ACCESS VIA NETWORK MODULES
5.3 MELSECNET/H Module Access Function
5.3.2 Link device access
5 - 17
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
ACCESS VIA NETWORK
MODULES
6
PREPARATORY
PROCEDURES AND
SETTING
7
I/O NUMBER
ASSIGNMENT
8
MEMORIES AND FILES
(c) Link device refresh
Data are refreshed between the link devices and internal link device buffers in the
specified link device refresh cycles and with refresh parameters set in
MELSECNET/H utility.
( Page 5-21, Section 5.3.4)
This refresh is performed in the areas that are set by refresh parameters and also
set in Network range assignme
nt in the <<Parameter settings>> tab of
MELSECNET/H utility.
An internal link device buffer, which is not used for link device refresh, can be
utilized as an internal memory of a user program.
Figure 5.15 Link device refresh range
C Controller module
Range to be
actually
refreshed
Applicable
as internal
memory
Applicable
as internal
memory
Applicable
as internal
memory
Link device
refresh
Link device
refresh
Link device
refresh
MELSECNET/H module
Network range
assignment parameter
Internal link
device buffers
(Empty)
Station
No.2
Station
No.3
Station
No.1
(Empty)
Range set by
network range
assignment
Range set by
refresh
parameters
To Next Page
Loading...
