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Interface Profibus
Analog Output
Module
7SA6 Manual
C53000-G1176-C156-2
Terminating Resistors
Jum-
pers
connected
X3
1–2
X4
1–2
*)
Default Setting
Figure 8-22 Location of jumpers for the configuration of terminating resistors at the interface
Profibus
The terminating resistors can also be connected externally (e.g. to the connection
module) as illustrated in Figure 8-23. In this case, the terminating resistors located on
the RS485 or the Profibus interface module must be disconnected.
+5 V
392 Ω
A/A´
221 Ω
B/B´
392 Ω
Figure 8-23 Termination of interface RS485 (external)
The analog output module AN20 is provided with 2 isolated channels with a current
range from 0 to 20 mA (unipolar, maximum 350 Ω ).
The mounting location on the processor circuit board C–CPU–2 is "B" and/or "D", de-
pendent on the version (see Figure 8-19).
Figure 8-24 Interface module with the analog output AN20
C53207-A322-
disconnected
2–3 *)
2–3 *)
Installation and Commissioning
2 3 4
B100
B101
3
2
1
X4
3
2
1
X3
8-39
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