Rockwell-automation 57C411 Resolver Input Module Instrukcja Użytkownika Pobierz pdf (Strona 27)

4Ć9

4.5.1 BASIC Task Example

The following is an example of a BASIC task that handles interrupts

from the input module defined in section 4.4.

1000 COMMON RESOLVER_IN% \!Resolver data

1005 COMMON ISCR% \!Interrupt status & control

1010 COMMON CCLK_EN@ \!Common clock enable

1020 COMMON UPDATE_TIME% \!Resolver conversion time

1200 LOCAL RESOLVER_VALUE% \!Resolver value

2000 !

2001 ! Define the conversion parameters

2002 !

2010 UPDATE_TIME% = 1000 \!Convert every .5 seconds

3000 !

3001 ! The following statement connects the name RESOLVER_EVENT to the

3002 ! interrupt defined in ISCR%. The event name chosen should

3003 ! be as meaningful as possible. The watchdog timeout has

3004 ! been set to 120 clock ticks (660 msec). If the time between

3005 ! interrupts exceeds this value, a severe error will be declared

3006 ! and the system will be stopped. For more information refer to the

3007 ! DCS 5000 Enhanced BASIC Language Instruction Manual (JĆ3600).

3008 !

3010 EVENT NAME=RESOLVER_EVENT,

3011 ăăINTERRUPT_STATUS=ISCR%,TIMEOUT=120

4000 !

4001 ! The following statement enables common clock from this module

4002 ! If there is more than one interrupt task in a chassis, the task

4003 ! that enables common clock should always be the lowest priority

4004 ! task.

4005 !

4010 CCLK_EN@ = TRUE \!Common clock enable

5000 !

5001 ! Place additional initialization software here

5002 !

6000 !

6001 ! The next statement synchronizes the task with the external

6002 ! event via the interrupt. Task execution will be suspended

6003 ! until the interrupt occurs. If this task is the highest

6004 ! priority task waiting to execute at the time of the

6005 ! interrupt, it will become active. If it is not the

6006 ! highest priority task, it will remain suspended until

6007 ! all higher priority tasks have executed, at which point

6008 ! it will become active.

6009 !

6010 WAIT ON RESOLVER_EVENT

7000 !

7001 ! The next statements perform the interrupt service routine

7002 !

7010 RESOLVER_VALUE% = RESOLVER_IN%

10000 END

4.5.2 Control Block Task Example

The following is an example of a control block task that handles

interrupts from the input module defined in section 4.4.

1000 COMMON RESOLVER_IN% \!Resolver data

1005 COMMON ISCR% \!Interrupt status & control

1010 COMMON CCLK_EN@ \!Common clock enable

1020 COMMON UPDATE_TIME% \!Resolver conversion time

1200 LOCAL RESOLVER_VALUE% \!Resolver value

2000 !

2001 ! Define the conversion parameters

2002 !

2010 UPDATE_TIME% = 100 \!Convert every 50 milliĆseconds

3000 !

3001 ! The following statement connects the name RESOLVER_EVENT to

3002 ! the interrupt defined in ISCR%. The event name chosen should

3003 ! be as meaningful as possible. The watchdog timeout has

3004 ! been set to 12 clock ticks (66 msec). If the time between

3005 ! interrupts exceeds this value, a severe error will be declared

3006 ! and the system will be stopped. For more information refer to the

3007 ! DCS 5000 Enhanced BASIC Language Instruction Manual (JĆ3600).

3008 !

3010 EVENT NAME=RESOLVER_EVENT, &

3011 ăăINTERRUPT_STATUS=ISCR%, TIMEOUT=12

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