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Siemens PLC communication error

2016-10-01View Original

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Our factory has a Siemens PLC400 system with two master stations (CPU414-5H), which communicate via DP/DP computer communication cards. Master station 2 has developed an error; how can we determine which one is Master Station 2? Which module is 0/0/7?
Reply #22016-10-01
I don’t understand. What were the specific fault symptoms on site? Is there a prompt message? Generally, the DP address for a CPU is 2 by default.
Reply #32016-10-02
The MPI/DP address of CPU417-5H is 2, and its DP address is 3. Why are there two addresses? So what is the address of the master station?
Reply #42016-10-02
The MPI/DP address of CPU417-5H is 2, and its DP address is 3. Why are there two addresses? So what is the address of the master station?
Reply #52016-10-05
To determine which master and slave station it is, check the project; the slave stations are all connected to the master station

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