Rockwell-automation 1771-QB Linear Pos. Uživatelský manuál stáhnout pdf (Strana 94)

Formatting Module Data (WRITES)

Chapter 7

715

Figure 7.17

PID

Band W

ord

50065

This value times two is the PID band,

BCD or binary

9.999 inch or 99.99 mm max

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

Deadband (words 13 and 42)

The deadband parameter lets you select an error range on either side of a

commanded endpoint where the integral term of the PID algorithm doesn’t

change.

Figure 7.18

Deadband

50064

Position

Deadband

Endpoint

The module uses the deadband only after the axis crosses the endpoint. The

deadband helps reduce oscillations around the endpoint.

Figure 7.19

Deadband

ord

50066

This value times two is the deadband,

BCD or binary

9.999 inch or 99.99 mm max

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

1 2 ... 89 90 91 92 93 94 95 96 97 98 99 ... 225 226

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Rockwell-automation 1771-QB Linear Pos. Uživatelský manuál Strana 94