dead_channel

Purpose:

Monitor variables and events to detect if they are not being updated and initiate specified actions.

Enter:

dead_channel &

Where:

N/A

Example:

dead_channel &

Notes:

This process is normally launched by the “sys_start” task and requires no command line arguments.
The specification file “/cell/dead_chan_specs” must exist else the process will terminate.
The process may be manually launched if it terminates when launched by “sys_start”.

The methods can be specified in the /cell/dead_chan_specs specification file. A maximum of 256 specifications is allowed.

An example is shown below:

 key  
 “if( key_switch &&  ( RPM > 150[rpm] ) ) then TRUE else FALSE”  
 
variable   eval_period type        action_type    watchdog_delay  
 
cmp_in_p    10[sec]     EU_COMP     ABORT          30[sec]  
 
cmp_ot_p    15[sec]     RAW_COMP    ABORT          30[sec]  
 
int_mnf_p   20[sec]     AGE_TEST    ABORT          10[sec]  
 
 or the following for a standard deviation evaluation  
 
variable   eval_period type        limit_value action_type   watchdog_delay  
 
blow_by     10[s]       SD_LIMIT    0.1[psi]    EMERGENCY     30[s]  
 
 or the following for an event  
 
event_name  eval_period   type     action_type    watchdog_delay  
 
ctd20_err    10[sec]      EVENT      ABORT         0[s]  

 

See Also:

sys_start