Bus Parameters - Mitsubishi Electric Melsec Q Series User Manual

6
PARAMETER SETTING

6.4 Bus Parameters

Set the PROFIBUS-DP parameters.
Normally, the bus parameters are used as default values.
When changing some of the bus parameters, make sure of the PROFIBUS-DP standard in
advance.
(1) Start procedure
Click the
(2) Setting items
Item
Slot Time (T_sl)
min T_sdr
max T_sdr
Quiet Time (T_qui)
Setup Time (T_set)
Target Rot. Time (T_tr)
GAP factor
HSA
Max retry limit
button in the "Master Settings" window.
Bus Parameters
Figure 6.4 Bus Parameter Settings window
Table6.4 Bus Parameter Setting Items
Set the slot time (maximum time for waiting for a response).
If this set time is exceeded, an error will be detected.
Setting range: 37 to 16383 (Unit:
Set the minimum response time of responders.
Setting range: 11 to 1023 (Unit:
Set the maximum response time of responders.
Setting range: 37 to 1023 (Unit:
Set the repeater switching time (the time required for switching the transmission direction of the
repeater).
Set 0 when the network does not contain a repeater.
Setting range: 0 to 127 (Unit:
Set the setup time.
Setting range: 1 to 255 (Unit:
Set the target token rotation time.
Setting range: 256 to 16777215 (Unit:
Set a constant for controlling the GAP update time (T_gud).
Setting range: 1 to 100 (Default: 10)
Set the highest FDL address of DP-Slaves that exist on the network.
Setting range: 2 to 126 (Default: 126)
Set the maximum number of retries for individual data transmission.
Setting range: 1 to 7 (Default: Depends on the transmission speed)
6.4 Bus Parameters
Description
T , Default: Depends on the transmission speed)
Bit
T , Default: 11 T )
Bit Bit
T , Default: Depends on the transmission speed)
Bit
T , Default: Depends on the transmission speed)
Bit
T , Default: Depends on the transmission speed)
Bit
T , Default: 50000 T
Bit
)
Bit
1
2
3
4
5
6
7
8
6
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