Allen Bradley 5069-L32 port 4 issue.

dwayne walls

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Nov 21, 2025, 3:23:07 PMNov 21

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I needed to use port 4 in the path string which comes out to be 20 in decimal like port 2 = 18 and port 3 = 19. The issue is the match_dhp_addr_segment in cip.c line 431 where the switch case finds 2 and then expects a : next.

Kyle

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Nov 21, 2025, 3:24:34 PMNov 21

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What is the tag attribute string you are trying to use? Are you intentionally trying to bridge across DH+?

Best,

Kyle

dwayne walls

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Dec 1, 2025, 8:14:33 PMDec 1

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Gateway = ""10.176.13.39"

path = "20,192.168.0.107,1,0"

The 5069-L320ER plc is in dual ip mode with A1 IP: 10.176.13.39 and A2 IP: 192.168.0.200.

The wireshark capture is when I was online with PLC at 192.168.0.107.

I commented out "case '2': *port = 1; break;" in cip.c and rebuilt project and was able to talk to 192.168.0.107. Before then, I was getting bad gateway error.

Kyle

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Dec 1, 2025, 8:19:33 PMDec 1

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Sorry for the delay. I will look into this and see how to support this in the code so that it is easier to do this.

Best,

Kyle

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Dec 1, 2025, 8:21:51 PMDec 1

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I have opened issue #600 to track this.

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