Siemens SIMATIC PCS 7 SMART Getting Started page 29

Piping and Instrumentation Diagram (P&ID)
The piping and instrumentation diagram illustrates the precise sequence of the configuration
task and displays all the associated relevant process tags:
Explanation of the piping and instrumentation flow diagram
The terms used have the following meanings:
● LI111 (level indicator): measurement of the current fill level of the raw material tank.
● NK111 and NK112 (customer-specific identifier for valves): shut-off valves which must
always be opened for dosing raw materials.
● NP111 (customer-specific identifier for motors): pump that transports the raw material to
the reactors.
● NK113 or NK114 (customer-specific identifier for valves): valves, of which only one may
be open at a given time, in order to transport the raw material to either reactor 1 or reactor
2.
● FC111 (flow control) : actuator which regulates quantities for the raw material.
The states of the valves NK111 to NK114 can be displayed and monitored in the operator
station. You also have the possibility to influence the dosing via FC111.
PCS 7 SMART Getting Started - Part 1 (V9.0 with APL)
Getting Started, 12/2017, A5E42181435-AA
Initial work for the project
5.1 Planning the project
29