User Manual M3000® Automation System / MSC II (Moog Servo ...

10 MSC II (Moog Servo Controller) Safety Functions
As long as the 'Outputs Enabled' output is in the 1 state, the application program
will control all outputs, the E-bus communication and the fieldbus communication.
If the 'Outputs Enabled' output is switched to the 0 state (LED «OutEN» does
not illuminate), all outputs will be disabled, the E-bus communication and the
fieldbus communication will be stopped.
In this case, although the internal states of the digital outputs are shown on
the front panel status LEDs «I/O1»…«I/O4» of the MSC II control module,
they are not connected through to the output.
The digital output 'Outputs Enabled' will be switched to the 1 state only if the
following conditions are fulfilled simultaneously:
• An error-free application program has been loaded onto the MSC II control
module and will be started once after every reset of the MSC II control
module
• A valid license key is inserted
• The M_WATCHDOG function block is not used
or the M_WATCHDOG function block is used in the application program,
enabled and triggered cyclically within the set time
If any one of these conditions is not fulfilled, the 'Outputs Enabled' output will
be switched to the 0 state, thereby disabling all of the MSC II control module's
other outputs. In addition, the E-bus and the fieldbus communication will be
stopped.
10.17.2.1 «OutEN» LED
The front panel LED «OutEN», located of the MSC II control module, indicates
the status of the 'Outputs Enabled' output. The LED «OutEN» illuminates
when the 'Outputs Enabled' output is in the 1 state.
10.17.3 Stopping the Application Program
An application program (executed in the MSC II control module) can be
stopped in the MACS development environment.
After an application program stops, all analog and digital outputs will automatically
be switched to a secure state. This secure value can be set for each
output individually by modifying the 'Secure' channel parameter in the
PLC Configuration.
If the «OutEN» LED does not illuminate (when the 'Outputs Enabled'
output is in the 0 state), this secure value will not be at the outputs because
the outputs will be disabled.
�-"10.17.2-'Outputs Enabled' Output (LED «OutEN»)" on page 111
«OutEN» LED of the
MSC II control module
Stopping the
Application Program
© Moog GmbH User Manual M3000 ® and MSC II (CA65865-001; Version 1.1, 08/08) 112