– 90 –
61131-3
IEC:2003(E)
Table 42 - Declaration of actions
a,b
No.
Feature
1
Any Boolean variable declared in a VAR or VAR_OUTPUT block, or their graphical
equivalents, can be an action.
No.
Example
Feature
2l
+----------------------------------------+
| ACTION_4 |
+----------------------------------------+
| | %IX1 %MX3 S8.X %QX17 | |
| +---||-----||----||-----()---+ |
| | | |
| | +------+ | |
| +----|EN ENO| %MX10 | |
| | C--| LT |----------(S)---+ |
| | D--| | | |
| | +------+ | |
+----------------------------------------+
Graphical
declaration in LD
language (see 4.2)
2s
+----------------------------------------+
| OPEN_VALVE_1 |
+----------------------------------------+
| | ... |
| +=================+ |
| || VALVE_1_READY || |
| +=================+ |
| | |
| + STEP8.X |
| | |
| +-----------------+ +---+-----------+ |
| | VALVE_1_OPENING |--| N |VALVE_1_FWD| |
| +-----------------+ +---+-----------+ |
| | ... |
+----------------------------------------+
Inclusion
of SFC
elements in action
2f
+----------------------------------------+
| ACTION_4 |
+----------------------------------------+
| +---+ |
| %IX1--| & | |
| %MX3--| |--%QX17 |
| S8.X---------| | |
| +---+ FF28 |
| +----+ |
| | SR | |
| +------+ | Q1|-%MX10 |
| C--| LT |--|S1 | |
| D--| | +----+ |
| +------+ |
+----------------------------------------+
Graphical
declaration
in FBD language
(see 4.3)
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