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OS Function Block
General
The OS (output splitter) function block splits a single control signal into two parts for
coordinating the actions of two or more valves, such as for split-range control or sequencing
control of a large and a small valve (Figure 62).
Figure 62 Inputs/Outputs of OS Function Block
The OS block receives a control signal and converts it into two signals in accordance with
the predefined relationships. The major functions of the OS block include (Figure 63):
❑ Conversion of the setpoint (SP) value into two output values (OUT_1 and OUT_2) in
accordance with the user-specified characteristics (set in IN_ARRAY and
OUT_ARRAY)
❑ Generation of the output value to be fed back to the upstream block (BKCAL_OUT).
Figure 63 Function Diagram of OS Function Block
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