Yamaha SRCP manual General-purpose input DI0 to DI7, PRM7

3-2 Input Signal Description

3

I/O INTERFACE

3-6

3-2-2 General-purpose input (DI0 to DI7)

These general-purpose inputs are available to users for handling data input in a program.

These inputs are usually connected to sensors or switches. These inputs can also be directly con- nected to a PLC output circuit.

As a special function during execution of an ABS-PT or INC-PT point movement command, these general- purpose inputs can be used to specify the point numbers and movement speed.

The number of general-purpose input (DI) points used to specify the point numbers and speed differs depending on whether SERVICE mode is enabled or disabled and also on the PRM7 (I/O point movement command speed parameter) setting.

For example, when PRM7 is 100 in normal mode (SERVICE mode disabled), the point numbers should be input in binary code with DI0 to DI7 to specify P0 to P255 as shown in the table below. If PRM7 is 0 in normal mode (SERVICE mode disabled), then point numbers should be input with DI0 to DI5 in binary code to specify P0 to P63 as shown in the table below. The movement speed is specified as 100% when both DI6 and DI7 are off. In other cases, it is set to the speed specified by the parameter. (See "5-2 Parameter Description".) Also see the tables below for more details.

	PRM7	DI used to specify point numbers	DI used to specify speed	Speed setting method
	100 (default setting)	DI7 to DI0 (256 points)	Not specified	100%
NORMAL mode
	1 to 99	DI6 to DI0 (128 points)	DI7	Speed setting pattern 2
(SERVICE mode disabled)
	0	DI5 to DI0 (64 points)	DI7, DI6	Speed setting pattern 1
SERVICE mode enabled	100 (default setting)	DI6 to DI0 (128 points)	Not specified	100%
	1 to 99	DI5 to DI0 (64 points)	DI6	Speed setting pattern 3

Example of point number setting

DI No.	DI7	DI6	DI5	DI4	DI3	DI2	DI1	DI0
Point No.	(27)	(26)	(25)	(24)	(23)	(22)	(21)	(20)
P0	OFF	OFF	OFF	OFF	OFF	OFF	OFF	OFF
P1	OFF	OFF	OFF	OFF	OFF	OFF	OFF	ON
P3	OFF	OFF	OFF	OFF	OFF	OFF	ON	ON
P7	OFF	OFF	OFF	OFF	OFF	ON	ON	ON
P15	OFF	OFF	OFF	OFF	ON	ON	ON	ON
P31	OFF	OFF	OFF	ON	ON	ON	ON	ON
P63	OFF	OFF	ON	ON	ON	ON	ON	ON
P127	OFF	ON	ON	ON	ON	ON	ON	ON
P254	ON	ON	ON	ON	ON	ON	ON	OFF
P255	ON	ON	ON	ON	ON	ON	ON	ON

Example of point movement speed setting

Speed setting pattern 1

DI7		DI6	Movement speed
OFF		OFF	100%
OFF		ON	PRM41
ON		OFF	PRM42
ON		ON	PRM43
Speed setting pattern 2
	DI7		Movement speed
OFF			100%
	ON		PRM7
Speed setting pattern 3
	DI6		Movement speed
OFF			100%
	ON		PRM7

*DI7 functions as the SERVICE mode input when the SERVICE mode function is enabled. In this case, DI0 to DI6 can be used as the general-purpose inputs.