7.2.7
Opening the "SFC_RMT1" SFC Chart
Prerequisites
● The color_gs project is open in SIMATIC Manager.
● The Plant View is activated.
Procedure
1. Select the "color_gs_prj_MP\color_gs_prj_Prj\Plant1\ RMT1" folder in the tree view.
2. Select the "SFC_RMT1" object in the detail view, and select Edit > Open Object. The SFC
Editor opens the "Start" and "End" steps. Transition 1 already exists.
7.2.8
Technological structure of the sequential control system
Technological Sequence
The following section provides you with an overview of the technological sequence of the
individual steps and transitions in the sequential control system for the "color_gs" project:
Name of the Step
Function
START
Defaults:
Start the dosing controller in automatic mode
Set aggregates to automatic mode
DOSE_REA1
DOSE_REA2
Query:
Should reactor 1 or reactor 2 be dosed?
INIT_LINE1
INIT_LINE2
Controllers:
Open the valves of the relevant branch
Turn the pump on
INIT_1_OK
INIT_2_OK
Query:
Is the pump switched on?
Is the controller set to "External setpoint"?
INIT_DOSE
Controllers:
Specify dosing rate setpoint
Set dosing controller to automatic mode
Specify dosing volume setpoint
Start dosing procedure
INIT_OK
Query:
Is the setpoint of the course dosing quantity less than the dosing quantity?
SLOW_DOWN
Checking whether the engine is still running
END_DOSE
Query:
Dosing ended?
Creating SFCs
7.2 Working with the SFC Editor
PCS 7 SMART Getting Started - Part 1 (V9.0 with APL)
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Getting Started, 12/2017, A5E42181435-AA