Siemens SINUMERIK 840C - Manual (Page 655)

Configur.
DAC
09.95
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Siemens AG 2001 All Rights Reserved 6FC5197– j AA50 9–34
SINUMERIK 840C (IA)
Note The test sockets on 611D modules have an output voltage of between 0 and 5 V;
611A modules have a +/–10 V output. The test sockets can be evaluated in the
usual way. These sockets are not intended for use in normal operation.
Anwahl
Diagnosis
Drive servo
startup
Start-up
Configur.
DAC Configur.
mixed I/O
Fig. 9.14
Explanation In this display, the output DACs are assigned via drive selection (+/–) and speci-
fication of the axis/spindle name.
The offset input values must make allowance for the output range of the analog
voltage signal. The 611D drive module DACs have an output range of –2.5 V to
2.5 V.
Since the DAC resolution is limited (8 bits), a window can be placed over the
output value by means of the shift factor, i.e. the signal output is decreased
(normalization) when a negative shift factor is input and is increased
(normalization) with a positive shift factor. The input limits for the shift factor vary
for SERVO, FDD and MSD:
9 Drive Servo Start-Up Application (as from SW 3)
9.4 Mixed I/O configuration and digital-analog converter, DAC (as from SW 3)