Pilz PSSu E S 2AO U, Operating Manual

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Function description
Operating Manual PSSu E S 2AO U(-T)
21423-EN-04
19
4.3.3 Switch-on value
When the PSSuniversal is switched on, the output assumes the switch-on value until the
module receives data for the value of the output. You can configure the outputs per channel
with the manufacturer switch-on value (default) or you can use a freely definable user
switch-on value. The manufacturer switch-on value is 0 V.
If the module does not receive any data from the module bus for 50 ms, the outputs are re-
set to the switch-on value.
Switch-on values are entered in the system software as decimal vaues. With default scal-
ing, the decimal value (n) is calculated from the analogue value at the output (U
Start
) as fol-
lows:
n = 32 767 * U
Start
/ 10 V
example:
}
Switch-on values as an analogue value at the output (U
Start
):
– Switch-on value for channel 1 is to be -8 V.
– Switch-on value for channel 2 is to be 5 V.
}
Entry in the system software:
– Switch-on value 1 corresponds to -26 214
– Switch-on value 2 corresponds to 16 384
The relationship between the switch-on value and the actual voltage at the output is not de-
pendent on the data format, but is dependent on the scaling. The module sets the voltage,
which corresponds to the switch-on voltage after scaling. Please refer to the "Scaling" sec-
tion in this manual.
4.3.4 Summary and overview
The module has the following configuration options:
Configurable properties
Default
value Meaning
Output range 0 0 V ... 10 V
(1 = -10 V ... 10 V)
Manufacturer scaling active 1/TRUE Activated
Manufacturer scaling offset 0 Offset: Magnitude 0
Manufacturer scaling gain 32
D
Amplification by 1/8, displaced three bit places
User scaling active 0/FALSE Deactivated
User scaling offset 0 Offset: Magnitude 0
User scaling gain 256
D
1x amplification, signal unchanged
Switch-on value active 0 Manufacturer switch-on value active
(1/TRUE = User switch-on value active)
Manufacturer switch-on value 0 0 V on switch-on
User switch-on value 0 0 V on switch-on
Sign and magnitude representa-
tion active
0/FALSE Deactivated; two's complement is activated