Date: File:GRAPH_06e.1 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Event-Dependent Actions and Branches

Date: File:GRAPH_06e.2 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Target

Date: File:GRAPH_06e.3 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Action block with event-dependent instructions here an action is executed once in the cycle in which the event occurred A1 = Acknowledge L1 = Interlock, interlock error entering state L0 = Interlock, interlock error leaving state S1 = Step, step becomes active S0 = Step, step is deactivated V1 = Supervision, supervision error occurred V0 = Supervision, supervision error cleared Action block _4 A1 NM1.1 L1 NM1.2 L0NM1.3 S1NM1.4 S0NM2.4 V1NM2.5 V0NM2.6 Event-Dependent Actions

Date: File:GRAPH_06e.4 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Event-Dependent Actions, Example

Date: File:GRAPH_06e.5 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives S3 Step 3 T3 Valve_ON Valve_1Valve_2 CMP ==I Step before transition Transition number Transition name Normally-open contact Normally-closed contact Comparator LAD branch, OPEN LAD branch, CLOSED MW0 MW2 Conditions in Transitions, Interlock and Supervision

Date: File:GRAPH_06e.6 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Signals occurring once = pulses of edge evaluation Si.S1 / Si.S0 = step no. i becomes active / is deactivated Si.L1 / Si.L0 = interlock disturbance leaving / entering step no. i Si.V1 / Si.V0 = supervision error occurred / cleared in step no. i Si.A1 = disturbance acknowledged in step no. i Example: transition T3 enables next step when step S002 acknowledged S002.A1 T3 Static signals Si.X = step no. i becomes active Si.LA = interlock disturbance in step no. i is active Si.VA = supervision error in step no. i is active Si.AA = acknowledgement in step no. i is active Example: supervision error in S002 results in an interlock disturbance S002. VA Interlock ( ) Binary Query of Sequencer Data

Date: File:GRAPH_06e.7 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Example 1: Step Enable with Interlock

Date: File:GRAPH_06e.8 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives This example describes a sequence supervision of max. 5 sec to step S 3, whereby the supervision disturbance with transition satisfied (TT = Transition True) can acknowledge itself. (Compiler setting: "Acknowledge errors" not set) Example 2: Querying Timers

Date: File:GRAPH_06e.9 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives FB sequencer ACK_EF Standard / Maximum / User-Definable (acknowledge errors) All FB parameter sets (without acknowledgement) For different FB parameter sets / settings: + transition OK ! ERR_FLT Acknowledgement in supervision Âcknowledge when transition satisfied Can be used with all parameter sets for step granular acknowledgement. Deactivate step: --> OFF Sx in sequencer --> S_OFF-->S_ON for set step Initialize/deactivate sequencer: --> Parameter INIT_SQ --> Parameter OFF_SQ (sequencer must then be initialized again) Example 3: Acknowledging Supervision Time

Date: File:GRAPH_06e.10 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Example 4: Querying Supervisions and Transitions

Date: File:GRAPH_06e.11 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Example 5: Querying Static Signals

Date: File:GRAPH_06e.12 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Example 6: Word Instructions in Action Blocks

Date: File:GRAPH_06e.13 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives ? S 1 S 2 S 3 T 1 T 2 Exercise (1): General Program Improvements

Date: File:GRAPH_06e.14 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives S 1 S 2 S 3 T 1 T 2 Additional Exercise: Documentation Using Symbolics

Date: File:GRAPH_06e.15 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Exercise (2): Program Expansion Analog Value Acquisition

Date: File:GRAPH_06e.16 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives S 1 S 2 S 3 T 1 T 2 Exercise (3): Event-Dependent Weight Measurement

Date: File:GRAPH_06e.17 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Open alternative branch Application: left branch part ok right branch part faulty Only one branch can be active in automatic and semi-automatic mode. Left branch always has priority 1, all other branches according to ascending T no. Execution is from top to bottom and left to right. Close alternative branch The appropriate branch is closed for execution again to the left. Execution is from top to bottom and right to left. 1st priority 2nd priority Order of priority from left to right (like GRAPH 5) Elements for Alternative Branches

Date: File:GRAPH_06e.18 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Open simultaneous branch -> All participating steps are synchronized in the same PLC cycle after the branch is opened -> Then: each branch executed separately until it is closed -> It is possible to step-enable all branches in the same PLC cycle -> Preceding transiton is also called opening transition Close simultaneous branch -> Synchronization takes place when joined i.e. all branches wait for one another until all steps preceding the close branch are active. Once this is the case, the subsequent transition to the left branch is step-enabled and the participating branches are closed. -> The subsequent transition is also called closing transition Note: you can tell simultaneous branches by the double lines Elements for Simultaneous Branches

Date: File:GRAPH_06e.19 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Process schematic stamping machine Upper dead center S5 (opener) Lower dead center S6 Stamp Blank parts Slide Pos. S1 Pos. S2 Pos. S3 Container for collecting rejected parts Simultaneous Branch Application (1), Stamping Machine Example

Date: File:GRAPH_06e.20 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Simultaneous Branch Application (2), Stamping Machine Example

Date: File:GRAPH_06e.21 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Partial Sequencers as Elements of the Sequencer Complex, Subsequencers

Date: File:GRAPH_06e.22 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Not OK? OK? Check_part Exercise (4): Expansion through Alternative Branches

Date: File:GRAPH_06e.23 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Exercise (5): Counting Rejected Parts

Date: File:GRAPH_06e.24 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives Exercise (6): Integration and Additional Functions in OB1

Date: File:GRAPH_06e.25 SIMATIC S7 Siemens AG All rights reserved. SITRAIN Training for Automation and Drives INI 1 to INI 3 proximity switch LS 1 Light barrier M 1 Motor H 1, H 2, H 3 LEDs S 1, S 2, S 3, S 4 Acknowledge keys L R Final assembly Bay 1 Bay 2 Bay 3 H4 BuzzerConveyor OFF / ON Additional Exercise: Integrate Assembly Bay 2 and 3