Mitsubishi Electric Melsec Q Series User Manual page 174

6
PARAMETER SETTING
(3) Precautions for bus parameter setting
Item
max T_sdr
Quiet Time (T_qui)
Setup Time (T_set)
6
- 9 6.4 Bus Parameters
Remark
[T ] (Bit Time) is a unit that expresses the time required for 1-bit data
Bit
transmission as "1".
The actual processing time differs as shown below depending on the transmission
speed.
• In the case of 1.5 Mbps, 1[T
• In the case of 12 Mbps, 1[T
T is converted into ms automatically on GX Configurator-DP.
Bit
The results of the conversion (ms) are displayed on the right side of the window.
For each set value of the max T_sdr, Quiet Time (T_qui) and Setup Time (T_set), set
the maximum value among those of the stations connected to PROFIBUS-DP
(including the DP-Master).
The default value of the QJ71PB92V varies depending on the transmission speed.
Table6.5 Default Values of max T_sdr, Quiet Time (T_qui) and Setup Time (T_set)
187.5kbps
500kbps
or less
60
0
1
]=1 / (1.5
Bit
]=1 / (12
Bit
Default Values of QJ71PB92V
1.5Mbps
100 150
0 0
1 1
6 -6
10 )=0.667 10 [s]
6 -6
10 )=0.083 10 [s]
3Mbps 6Mbps
250 450
3 6
4 8
12Mbps
800
9
16