MD‑SI‑DP1 Communication
‑186‑
The change of digit 1 is valid upon the next power‑on. The change of slave addresses takes
effect immediately after setting.
Standard 9-pin PROFIBUS Interface
The MD‑SI‑DP1 expansion card is connected to the PROFIBUS master using the
standard DB9 socket. The pin signal definition and pin arrangement of the standard
DB9 socket are the same as those of Siemens' DB9 socket, as shown in the following
figure.
Figure 8‑4 DB9 terminal pins
Control Terminals
Table 8–1 Function description of control terminals
Category
Symbol
Terminal Name Function
PROFI
BUS
communi
cation
terminal
(J3)
1, 2, 7, and 9
NC
Unconnected internally
3
Data line B
Positive pole of the data line
5 GND
Isolated 5 V power ground
6 +5 V
Isolated 5 V power supply
8
Data line A
Negative pole of the data line
Program
ming
J4
Programming
Interface for production and
commissioning. Do not use it.
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