Bosch CL300 Manual page 71

Flexible Automation
SM31.2 Flashing Indicator approx. 2 Hz
SM31.3 Carry
SM31.4 Forcing Marker
SM31.5 Overflow
SM31.6 Negative
SM31.7 Zero
All inputs/outputs can be forced, i. e. they can be overlaid by an arbitrary
forcing mask. This forcing mask is entered by the programming unit.
When forcing signals, the special marker SM 31.4 is set. Using the button
Reset Fix", the forcing mask and the special marker are completely
cleared.
System Modules
4−19