Rockwell-automation 1771-QB Linear Pos. Bedienungsanleitung PDF herunterladen (Seite 109)

Formatting Module Data (WRITES)

Chapter 7

730

Example: If the axis is stationary at +1 inch (from the zero-position offset), an

absolute setpoint move with a position value of 2 inches will move the actuator

1 inch to the +2 inch position. An incremental setpoint move with a position

value of 2 inches will move the actuator 2 inches to the +3 inch position.

Bits 1 through 12 control setpoints 1 to 12 with a one-to-one correspondence. If

a bit is set to 1, the corresponding setpoint move is incremental. If it is reset to

0, the move is absolute. Bits 0, 13, 14, and 15 have no function and must be set

to 0.

Figure 7.39

Incremental/Absolute

ord

50080

Setpoints 12 through 1

(0 = absolute, 1 = incremental)

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

000 0

Setpoint Position

You must set the two setpoint position words for each setpoint move. Units are

in either inches or metric and the format in BCD or binary as determined by the

parameter block. The maximum programmable setpoint position is +

799.900

inches or +

7999.00 millimeters.

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Rockwell-automation 1771-QB Linear Pos. Bedienungsanleitung Seite 109