Setting The Refresh Range (D8178) - Mitsubishi Electric MELSEC FX Series User Manual

FX communication
4.2.3

Setting the Refresh Range (D8178)

Set a value 0 to 2 to the special data register D8178. (Default = 0)
This setting is not required for the slave station.
The devices used in each pattern are occupied by all the stations for the N:N network.
Communication
device
Bit device (M)
Word device (D)
Note;
• Please set the refresh range to pattern 0. When setting it other than pattern 0, all FX
and FX
In this case, please note that link time becomes as long as the FX
communication error is occurring.
1 ) In the case of pattern 0 (FX
Station No.
No.0
No.1
No.2
No.3
No.4
No.5
No,6
No.7
Pattern 0
(FX , FX , FX
0N 1S
FX , FX
2N 2NC
0 point
4 points
series units in the system experience a communications error.
1S
, FX
0N
Device No.
Bit device (M) Word device (D)
0 point

D0 to D3

D10 to D13

D20 to D23

D30 to D33

D40 to D43

D50 to D53

D60 to D63

D70 to D73
Refresh range
Pattern 1
,
1N
(FX , FX , FX
1N 2N 2NC
)
32 points
4 points
, FX , FX , FX
1S 1N 2N 2NC
4 points
Pattern 2
) (FX , FX , FX
1N 2N 2NC
64 points
8 points
and FX
0N
)
N:N network 4
)
0N
1S
4-4