Lenze E94P PositionServo with MVOB Uživatelský manuál stáhnout pdf (Strana 89)

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Reference

Table 30: EVENT

EVENT Starts Event handler Statement

Purpose

EVENT keyword is used to create scanned events within the user program.

Statement also sets one of 4 possible types of events.

Syntax

Any one of the 4 syntax examples herein may be used:

1. EVENT <name> INPUT <inputname> RISE

2. EVENT <name> INPUT <inputname> FALL

3. EVENT <name> TIME <period>

4. EVENT <name> <expression>

name any valid alphanumeric string

inputname any valid input “IN_A1 - IN_C4”

period any integer number. Expressed in ms

expression any arithmetic or logical expression

The following statements can not be used within event’s handler:

MOVE MOVED MOVEP MOVEDR

MOVEPR MDV MOTION SUSPEND MOTION RESUME

STOP MOTION DO/UNTIL GOTO GOSUB

HALT VELOCITY ON/OFF WAIT WHILE/ENDWHILE

ASSIGN END ON FAULT/END FAULT RESUME

RETURN

While GOTO or GOSUB are restricted, a special JUMP statement can be used for program ﬂow change from

within event handler. See JUMP statement description in Language Reference section.

Program labels are also not permitted within event code.

Remarks

For syntax 1 and 2:

The Event will occur when the input deﬁned by the <name> transition from low to high, for syntax 1 (RISE) and from high to

low for syntax 2 (FALL).

For syntax 3:

The Event will occur when the speciﬁed , <period>, period of time has expired. This event can be used as periodic event to

check for some conditions.

For syntax 4

The Event will occur when the expression, <expression>, evaluates to be true. The expression can be any valid arithmetic

or logical expression or combination of the two. This event can be used when implementing soft limit switches or when

changing the program ﬂow based on some conditions. Any variable, (user and system), or constants can be used in the

expression. The event will only trigger when the logic transitions from False to True. Further occurrence of the event will not

occur while the condition remains true.

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Lenze E94P PositionServo with MVOB Uživatelský manuál Strana 89