{An important way of controlling these {Solenoid|Pneumatic|Electric} Valves, which is particularly useful in safety-critical and expensive or hazardous plants in various manufacturing sectors, is represented by {Supervisory Control and Data Acquisition Systems|SCADA|Pneumatic Valves Controller} used in conjunction with a {Server|Hardware|Software} of the type called {Stateful Server Requestor|Server-Requestor|SSR}. These {SSRs|Stateful Server Requestors|SR} are controlled by flow databases, and can update in real-time after being triggered through an associated control routine for example. }
{Here's how {SSRs|Stateful Server Requestors|SR} to a {Solenoid|Pneumatic|Electric} Valve might work: In terms of setup, an {Initial|First|Set} state would be set into a respective database on both the {server|hardware|local} end as well as potentially, the local end near the control item. Following setup and associated hardware initialization, regular and periodic "{get state}" commands to the data storage space can now be issued and also retrieved from, thereby retrieving an instantaneous version of the {Solenoid|Pneumatic|Electric} Valve's true, current operational status. If for instance the user was logged into the {webpage|application|interface} application then which requests data from an associated {SSR|Stateful Server Requestor|SR} instance they can take such retrieved data and compare it against a given "{operational status}" condition declared in either an {unedited|unchanged|altered} or programmatically changed application script. Following necessary processing then to handle the obtained differing status scenarios, (changing the logical state when a decision, for example, determines the operational status of the {Solenoid|Pneumatic|Electric}.should be switched either ON or OFF), a single HTTP request could end up also being sent to the {server|hardware|local} itself, altering the relevant logical "{state}" already held in the database, رله الکترونیکی this can also result in the solenoid valve moving from the state of being either {On|Off} depending on such signal transmission.|}
{Using this described model of {SSR|Stateful Server Requestor|SR} system automation, safety features and access controls to help protect the machine from potential human impacts could now also be developed as well. For example these are useful when people use the same application to also configure data record overwriting and {server|hardware|local}-to-{Solenid|Pneumatic|Electric} communications as they typically would with any state altering updates. {Secure|Protected|Safety} mechanisms would ideally be programmed as to work within a fully validated architecture with each user possessing the respective roles that they have the access permissions to carry out a specific, target operation. }
{Within a system representing this kind of {SSR|Stateful Server Requestor|SR} to a {Solenoid|Pneumatic|Electric} valve scenario, further architectural options may vary in complexity depending largely on environment execution.