4
FUNCTIONS
4.4 MELSECNET/H Module Access Function
4.4.5 Link data send/receive processing time specifications
4 - 36
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
SETTING AND
PROCEDURES
6
I/O NUMBER
ASSIGNMENT
7
MEMORIES AND
FILES
8
INSTALLING /
UNINSTALLING
* 1 A total time for the number of mounted MELSECNET/H modules.
* 2 For details, refer to the Q Corresponding MELSECNET/H Network System Reference Manual (PLC
to PLC network).
The mentioned calculation expressions are effective under the following
conditions:
• There are no faulty stations.
• Transient transmission is not executed.
2) Total link devices refresh time (
T, R)
The total link devices refresh time is calculated by the following expression
according to the points assigned to link devices..
T : Total link devices refresh time (sending side)
R : Total link devices refresh time (receiving side)
LB : Total points of link relays (LB) refreshed by the station
*1
LW : Total points of link registers (LW) refreshed by the station
*1
LX : Total points of link inputs (LX) refreshed by the station
*1
LY : Total points of link outputs (LY) refreshed by the station
*1
KM1, KM2: Constants
* 1 The range set by refresh parameters and total number of link device points set by the network
range assignment. (The number of points assigned for the reserved station is excluded.)
The total number of the mounted MELSECNET/H modules controlled by the C Controller module.
Table4.11 KM1,KM2 values
MELSECNET/H
module mounting
position
KM1 KM2
Main base 1.33
0.45 X10
-3
Extension base 1.33
0.94 X10
-3
[Total link devices refresh time]
T, R = KM1 + KM2
16
[ms]
LB + LX + LY + (LW 16)
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