Mitsubishi Electronics MR-J3-T PA03, PA01

Positioning with Digital Inputs Configuration for Positioning

4.4Configuration for Positioning

If you install the MR-J3-D01 I/O expansion you can use point table positioning, which allows you to select positions from a list of up to 256 table entries with a combination of eight digital inputs. Table 4-3 shows how binary input signals are encoded to address the point table entries.

			Digital Input Signals					Selected Point
DI7	DI6	DI5	DI4	DI3	DI2	DI1	DI0	Table Entry
0	0	0	0	0	0	0	1	1
0	0	0	0	0	0	1	0	2
0	0	0	0	0	0	1	1	3
0	0	0	0	0	1	0	0	4
·	·	·	·	·	·	·	·	·
·	·	·	·	·	·	·	·	·
·	·	·	·	·	·	·	·	·
1	1	1	1	1	1	1	0	254
1	1	1	1	1	1	1	1	255

Table 4-3:Selection of point table entries with digital input signals

In the factory default configuration the incremental system is activated, which means that the absolute position detection system is turned off (PA03 “absolute position detection system”).In this mode the current position is not stored when the power is turned off and you must thus perform a home position return every time the amplifier is powered on. The default configuration also uses absolute target positions (PA01 “positioning control mode”).

No.	Code	Function		Description
PA01 ￿	*STY	Positioning control	0: Absolute target position values
		mode	1: Incremental target position values
PA03 ￿	*ABS	Absolute position	0: Incremental system (absolute detection off)
		detection system	1: Absolute position detection system on
PA05 ￿	*FTY	Feed length multi-		Needed here to scale the home position value to the physical coor-
		plication factor		dinate system when a home position offset (shift) has been set.
				Parameter	Multiplication	Range of the target
				value	factor STM	position values
				0	1	−999.999 .. +999.999
				1	10	−9999.99 .. +9999.99
				2	100	−99999.9 .. +99999.9
				3	1000	−999999 .. +999999

Table 4-4:Parameter reference

￿To activate this parameter you must switch the amplifier power off and on again.

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