11/16/2021 12:03 PM | |
Joined: 11/11/2015 Last visit: 7/22/2024 Posts: 6 Rating: (0) |
Hi, I have an S7-400H system with ET200M on Profinet I / O connected to the PN CPUs and a CP 443-1 (1EX30-0EX0 v3.2) for each rack for redundant connection to DCS. I have configured everything, but the Modbus Poll tells me there is a connection, but it does not read (Timeout). At the moment I haven't loaded the license yet, in fact the LED on the CPU blinks. But I should read the vi modbus values even without a license, correct? Can someone help me?
AttachmentMDB_Problem.zip (856 Downloads) |
Last edited by: GALMARINI at: 11/16/2021 12:04:10Last edited by: GALMARINI at: 11/16/2021 12:04:19 |
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11/16/2021 2:13 PM | |
Joined: 11/11/2015 Last visit: 7/22/2024 Posts: 6 Rating: (0) |
I am using a separate PC to simulate the DCS, with host and VM with 2 separate ethernet interfaces CP_A: 192.168.0.250 (Conn 1- port 502 / Conn 2 - port 503) CP_B: 192.169.0.250 (Conn 1- port 502 / Conn 2 - port 503) Host: 192.168.0.251 (Mdb_poll_1-port 502, Mdb_poll_2-port 503) VM: 192.169.0.251 (Mdb_poll_1-port 502, Mdb_poll_2-port 503) NETPro gives the 4 green connections. But the 4 Modbus polls all give timeouts and variables to zero. The CPs are SERVER obviously, and the DB31 is initialized.
AttachmentMDB_Problem2.zip (867 Downloads) |
11/17/2021 9:39 AM | |
Joined: 11/11/2015 Last visit: 7/22/2024 Posts: 6 Rating: (0) |
Hello, I was unable to solve, not even by changing the mode. Does anyone have any suggestions. |
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