On/Off-Delay Mode - Siemens SIMATIC ET 200S Operating Instructions Manual

2PULSE
5.3 Modes and Functions
5.3.5

On/Off-Delay Mode

Definition
The signal pending at the digital input DI is output with an on/off-delay at the digital output
DO by the 2PULSE.
Figure 5-10
Output Sequence Enable
You must always issue the enable for the output sequence via a software enable
(SW_ENABLE 0→1; MANUAL_DO = 0) in your control program; this sets STS_ENABLE. The
ACK_SW_ENABLE feedback bit indicates the software enable pending at the 2PULSE.
The positive edge on the DI digital input (0→1) starts the on-delay, and on expiration of the
on-delay the DO digital output is set.
The negative edge on the DI digital input (1→0) starts the off-delay, and on expiration of the
off-delay the DO digital output is deleted.
If the 2PULSE recognizes a pulse duration or interpulse period that is too short, this is
displayed by the ERR_PULS pulse output error.
At the next edge at the DI digital input, the 2PULSE deletes the ERR_PULS feedback bit.
278
Basic Circuit Diagram for On/Off-Delay Mode
Technological Functions
Operating Instructions, 02/2007, A5E00124867-05