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CHAPTER 4 SETTING CLOCK
14
13
12
11
10
9
8
1
2
3
4
5
6
7
Component block pin number
6-8
4.2.3 To use an external clock
As a factory-set condition for shipment, a component block wired as shown in Fig. 4-10 is mounted to the X1 USRCLK
socket on the IE-78044-R-EM. If the wiring of this component block remains in the factory-set condition, no hardware
adjustments are necessary.
However, if the user prepares his or her own component block because another clock source is to be used, or because
the wired component block has been lost, then make connections in accordance with the procedure described below.
When starting the screen debugger, select “USER” for the clock setting on the initial setting screen or configuration
panel (selection of the user clock).
Prerequisites
• Component block (IE-78000-R accessory)
• Lead wires
• Soldering tools
Procedure
①
Wire and solder the leads to the component block as shown below.
Fig. 4-10 Wiring of Component Block (to use an external clock as the main system clock)
②
Prepare the IE-78044-R-EM and the wired break board.
③
Attach the component block in 1 to the socket (socket printed X1 USRCLK) on the IE-78044-R-EM. At this time,
make sure that pin 1 faces the correct direction.
Summary of Contents for IE-78044-R-EM
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