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Transition Control Block 
The transition control block is used to execute transitions. 
It supports common transitions and independent key 
transition.
a Display
The following information is displayed.
• Left-side display: Target bank name (M/E1 to M/E5, 
P/P)
• Center display: State (highlighted in reverse video when 
on) and priority of key 1 to key 4 
• Right-side display: State (highlighted in reverse video 
when on) and priority of key 5 to key 8
For details about priority of keys, see “Displaying the Key 
Output Status and Priority” (page 88).
b Transition settings section
Used in the assignment of functions, such as selecting 
transitions and making settings, to buttons.
You can change the assignment of buttons in the Setup 
menu.
For details, see “Setting Transition Control Block Button 
Assignments” (page 411).
Next transition selection buttons
These buttons specify how the image will be changed as a 
result of the next transition.
a Display
b Transition settings section c Transition execution section
d Independent key transition execution 
section
b Transition settings section
Button name Description
BKGD (background) Press the button, turning it on, to 
change the background using the 
next transition.
KEY1 to KEY8 • Press the [KEY1] button, turning 
it on, to insert or remove key 1 
using the next transition.
If key 1 is not currently inserted, it 
will be inserted by the transition. 
If key 1 is currently inserted, it will 
be removed by the transition.
• The same applies to the [KEY2] 
to [KEY8] buttons.