Rockwell Automation 57C411 Resolver Input Module - Manual (Page 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 COMMONRESOLVER_IN% \!Resolver data
1005 COMMONISCR% \!Interrupt status & control
1010 COMMONCCLK_EN@ \!Common clock enable
1020 COMMONUPDATE_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 ONRESOLVER_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 COMMONRESOLVER_IN% \!Resolver data
1005 COMMONISCR% \!Interrupt status & control
1010 COMMONCCLK_EN@ \!Common clock enable
1020 COMMONUPDATE_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