| Input IN |
BOOL (control input) |
| REQ |
BOOL ( Request for automatic mode) |
| ENQ |
BOOL ( Enable for output Q) |
| RST |
BOOL (asynchronous reset input) |
| Output Q |
BOOL (switching output for valve) |
| STATUS |
BYTE (ESR compliant status output) |
|
FLOW_CONTROL switches a valve at the output Q when the input IN = TRUE. In addition, the valve can also be switched via the input RE. REQ = TRUE turns the valve on for the time T_AUTO and will be locked for the time T_DELAY. after the time T_DELAY the valve can be turned on again on REQ. During this lock period T_DELAY the valve may be controlled by the input IN. An ESR compatible status output STATUS indicates the status of the module. Both the REQ and IN can only switch the output Q when the input ENQ is set to True. |
| Status = 100 |
Ready |
| Status = 101 |
Valve on by a TRUE at IN |
| Status = 102 |
Valve on by a TRUE at REQ |
| Status = 103 |
Reset is executed |
| The diagram illustrates the structure of inferential FLOW_CONTROL |
|
| Setup T_AUTO |
TIME (valve switch time in automatic mode) |
| T_DELAY |
TIME(valve disable Time in automatic mode) |
