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A Reference Signal is used to:
▪ Control an output based on the state of another output
▪ Represent the state of an output, input, safety function or logic block on another page.
When output SO2 is On, the SO2 reference signal state is On or High. The function
block above shows reference signal SO2 connected to the Reset Enable node RE of
Latch Reset Block LR1.
LR1 can only be reset (turned On) when ES1 is in the Run state and SO2 is On.
Reference Signals
M0:ES1
M0:MR1
M0:SO2
LR1 & SO1
See
on page 122 for use of referenced Safety Outputs.
Figure 65. Timing Diagram—Latch Reset Block and Referenced Safety Output
XS/SC26-2 and SC10-2 Safety Controllers
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