Rockwell-automation 57C411 Resolver Input Module Uživatelský manuál stáhnout pdf (Strana 25)

4Ć7

Each application program, or task, that wishes to reference the

symbolic names assigned to the input module may do so by

declaring those names COMMON.

The frequency with which tasks read their inputs and write their

outputs depends on the language being used. Control block tasks

read inputs once at the beginning of each scan and write outputs

once at the end of scan. BASIC tasks read an input and write an

output for each reference throughout the scan.

The following is an example of a configuration task for the input

module:

1000 !

1001 ! resolver input

1002 !

1005 IODEF RESOLVER_IN%[SLOT=4, REGISTER=0]

1006 IODEF RESOLVER_IN_EXT%[SLOT=4, REGISTER=1]

1010 !

1011 ! common clock enable

1012 !

1015 IODEF CCLK_EN@[SLOT=4, REGISTER=3, BIT=6]

1020 !

1021 ! A/D update period

1022 !

1025 IODEF UPDATE_TIME%[SLOT=4, REGISTER=4]

1050 !

1051 ! Place any additional configurationăstatements here

1052 !

2000 END

4.4.1 BASIC Task Example

This example will read the resolver input once every second and

store the value in the symbol CURRENT_VALUE". The resolver

position will be sampled every 100 milliseconds.

1000 COMMON RESOLVER_IN% \!Resolver data(periodic)

1010 COMMON CCLK_EN@ \!common clock enable

1020 COMMON UPDATE_TIME% \!Update period for resolver conversion

1400 !

1500 LOCAL CURRENT_VALUE% \!Current value of analog input

1900 !

2000 UPDATE_TIME% = 200 \!0.1 second conversion

2010 CCLK_EN@ = TRUE \!turn on the clock

4000 !

4001 ! Place any additional initialization software here

4002 !

5000 START EVERY 1 SECONDS

5010 CURRENT_VALUE% = RESOLVER_IN%

10000 END

The symbolic names defined as COMMON" reference the inputs

defined in the sample configuration task above. The symbolic name

CURRENT_VALUE% is local to the BASIC task and does not have I/O

associated with it. Refer to the DCS 5000 Enhanced BASIC

Language Instruction Manual (JĆ3600) for more information.

4.4.2 Control Block Task Example

The following example will read the resolver data every 55

milliseconds and store the inverted value in the symbol READING".

The resolver's shaft position will be sampled every 500

microseconds.

1000 COMMON RESOLVER_IN% \!Resolver data (periodic)

1010 COMMON CCLK_EN@ \!Common clock enable

1020 COMMON UPDATE_TIME% \!Update period forĂresolver conv.

1400 !

1500 LOCAL READING% \!Current negative value of input

1600 !

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 45 46

Komentáře k této Příručce

Žádné komentáře

Rockwell-automation 57C411 Resolver Input Module Uživatelský manuál Strana 25

Komentáře k této Příručce

Související produkty a manuály pro Zařízení Rockwell-automation 57C411 Resolver Input Module