PROFIBUS DP Communication
‑145‑
DIP Switch
MD38DP2 DIP switch description
Digit
Function
Description
1
PROFIBUS DP card type
switchover
OFF: MD38DP2 (default)
ON: MD38DP1
2 to 8
PROFIBUS DP
communication slave
address
The addresses of stations 1
to 125 can be set by the 7‑
digit binary DIP switch.
For example: Address DIP
Switch Setting (digit 8: least
significant bit)
1 000 0001
7 000 0111
20 001 0100
125 111 1101
The change of digit 1 is valid upon the next power‑on. The change of slave addresses takes
effect immediately after setting.
MD520 only supports MD38DP2. Therefore, digit 1 of the DIP switch needs to be set to OFF.
Standard 9-pin PROFIBUS Interface
MD38DP2 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.
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