3-6
Section
Creating and Editing Master Parameters
66
2. The drag and drop method can be used to change the I/O allocation of
Slaves that already have I/O allocated.
3. The drag and drop method can be used on Slaves that haven’t been regis-
tered and are listed as “Unknown.” An unregistered Slave’s allocation set-
ting window will be displayed automatically when it is dropped in the block
allocation column; allocate I/O to the Slave using method 1 as required.
Communication Cycle Time Setting
1, 2, 3...
1. Select “Communication Cycle Time” from the top of the window. The follow-
ing window will be displayed.
The communications cycle time is the interval between remote I/O commu-
nications processing with the same Slave. When a fixed communications
cycle time is set, the variations that occur with changes in network condi-
tions can be avoided. Setting a long communications cycle time can prevent
errors that occur because of Slaves that are very slow.
When the actual remote I/O communications time is shorter than the com-
munications cycle time setting, remote I/O communications will be delayed
to match the communications cycle time setting. When the actual remote I/O
communications time is longer, remote I/O communications will be per-
formed in the amount of time is actually required – regardless of the commu-
nications cycle time setting.
2. Set the communications cycle time by moving the slide bar shown in the fol-
lowing diagram. The slide bar can be moved by dragging (holding down the
left-mouse button and moving the mouse) or clicking at the desired location
on the slide bar.
Click on “Default” to select the automatic setting. With the automatic setting,
Remote I/O communications are performed in the amount of time actually
required each time.
Note The communications cycle time can be set in units of 1 ms.
