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S5-100U
Function
The module contains two pulse timers. While a timer runs, the LED of the respective channel is lit
and a "1" is reported to the CPU.
The pulse duration is preselected with the time range selector "x 0.3 s / x 3 s / x 30 s" in a definite
range and then set to the exact value by means of a potentiometer on the front panel. This selector
has scale divisions to simplify setting.
(time value=time range x scale value)
Example:
Time range:
Scale value:
Set time:
Installation
The counter is inserted into a bus unit like any other input or output module (see chapter 3).
Wiring
No wiring is required.
Addressing
A timer module is addressed like a two-channel digital module (channel "0" or "1").
The timer module is addressed like a digital output module for starting, resetting, or interrupting the
pulse. The signal status is scanned like a digital input module.
Starting the pulse
Interrupt/
Reset
Scan
"1" = timer running
EWA 4NEB 812 6120-02
x 3 s
7
7 x 3 s=21 s
S
Q x . 0
S
Q x . 1
R
Q x . 0
R
Q x . 1
A
I
x . 0
A
I
x . 1
Channel number
Slot address
Figure 15-2. Scanning the Timer Module
Function Modules
Channel "0"
Channel "1"
15-5
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