Siemens SIMATIC S5 Equipment Manual page 195

R 02/92
Scratchpad flags
Setpoints
Standard function block
ST FB
Synchronization
Track
TB
Track identifier bit
Traversing direction
Verify-read
Zero shift
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Flags which are also used by the standard function block
(FY 200 to FY 255); the scratchpad flag area must be saved
during interruptions that are caused by timed interrupts or
interrupts.
Desired start and end values of a cam
Program package in the SIMATIC S5 programmable
controller
Standard function block
With incremental encoders this means the timing coinci–
dence of an encoder pulse, a zero mark, and an initiating
pulse
Any reaction track where a cam can be set. The 1P 241
has a maximum of 16 tracks per channel
(32 with single-channel operation)
See clock pulse group
The result of a comparison between the actual value
and the setpoint of a track is made available here.
The direction from which a cam of the system is reached
Special function to eliminate brief disturbances (e.g., on
the encoder line)
By specifying a value, the reference point (mostly O) can
be changed to this value for incremental encoders.
Glossary
10 – 3