Mitsubishi Electric WS0-CPU0 - Parallel muting

Chapter 9
215
Logic programming – Function blocks
The following timer functions are influenced by the value of the Conveyor input:
Monitoring function Effect of the Conveyor input
Monitoring of the
total muting time
 If a belt stop is detected, these timer functions pause.
 If the conveyor belt starts up again, the timer continues its function
with the value stored before the belt stop has been detected. If
this occurs the first time, the total muting time is increased once by
5 seconds.
Concurrency
monitoring
The Sensor signal gap monitoring is not influenced by a belt stop.
Min. override pulse time
The Min. override pulse time determines the minimum High duration for a valid pulse
sequence at the Override input.
Muting status output
The Muting status output indicates the state of the muting function in accordance
with the following table:
Condition Muting status output
Muting cycle inactive, no error Low
Muting cycle active, no error High
Muting error detected Low
Override active, no error High
Muting lamp output
The Muting lamp output is used in order to indicate an active muting cycle. The value
for the Muting lamp output depends directly on the value of the Muting status output
as shown in the following table:
Status of the Muting function block Value of the Muting lamp output
Muting status output is Low Low
Muting status output is High High
Override cycle active High
Override required Pulses at 2 Hz
Muting error output
The Muting error output is used to indicate that an error connected to the muting
function block has been detected. The Muting error output becomes High when any
muting error has been detected. In order to reset a muting error it is necessary that all
muting sensors return to Low and that the OSSD signal of the ESPE is High.
Enable output
The Enable output is High if a valid muting condition exists, a valid override cycle
occurs or if the OSSD input of the ESPE is clear and no error/error state is active.
Table 96:
Effects of the conveyor belt
monitoring on the timer
functions
Note
Table 97:
Output values for muting
status
Table 98:
Output values for the Muting
lamp output