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4.4 Configuration for Positioning

If you install the MR-J3-D01 I/O expansion you can use point table posi tion ing, which allows you

to select posi tions from a list of up to 256 table entries with a com bi na tion of eight dig i tal inputs.

Table 4-3 shows how binary input sig nals are encoded to address the point table entries.

In the fac tory default con fig u ra tion the incre men tal sys tem is acti vated, which means that the

abso lute posi tion detec tion sys tem is turned off (PA03 “abso lute posi tion detec tion sys tem”).In

this mode the cur rent posi tion is not stored when the power is turned off and you must thus per -

form a home posi tion return every time the ampli fier is pow ered on. The default con fig u ra tion

also uses abso lute tar get posi tions (PA01 “posi tion ing con trol mode”).

To ac ti vate this pa ram e ter you must switch the am pli fier power off and on again.

Positioning with Digital Inputs Configuration for Positioning

MR-J3-T 4 - 23

Dig i tal In put Signals

Se lected Point

Ta ble Entry

DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0

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: Se lec tion of point ta ble en tries with dig i tal in put signals

No. Code Function Description

PA01

*STY Po si tion ing con trol

mode

0: Ab so lute tar get po si tion values

1: In cre men tal tar get po si tion values

PA03

*ABS Ab so lute po si tion

de tec tion system

0: In cre men tal sys tem (ab so lute de tec tion off)

1: Ab so lute po si tion de tec tion sys tem on

PA05

*FTY Feed length mul ti -

pli ca tion fac tor

Needed here to scale the home po si tion value to the phys i cal co or -

di nate sys tem when a home po si tion off set (shift) has been set.

Table 4-4: Pa ram e ter reference

Pa ram e ter

value

Mul ti pli ca tion

fac tor STM

Range of the tar get

po si tion values

0 1

−999.999 .. +999.999

1 10

−9999.99 .. +9999.99

2 100

−99999.9 .. +99999.9

3 1000

−999999 .. +999999