Cannot connect PLC to the online mosquitto broker via internet connection
Created by: minhkhanh at: 5/29/2018 4:13 PM (3 Replies)
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| 5/29/2018 4:13 PM | |
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Posts: 47 Rating:
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Dear Yu-wen Tang, I have another problem: I cannot connect PLC to the online mosquitto broker via internet connection. I try with cmd and MQTTLends, it works. I think I miss something in hardware (CP, CM modules...). I don't have any PLCs, so I use PLCSIM Advanced V2.0 to simulate PLC S7-1500. I wonder if it works with simulation PLC? Hope to hear from you soon. Thank you so much ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 5/30/2018 8:02:07 AMNew subject after splitting |
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| 5/29/2018 5:24 PM | |
Joined: 10/7/2009 Last visit: 3/6/2025 Posts: 266 Rating:
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Dear minhkhanh, No, PLCSIM does not work for internet connection. You need a real PLC to do so. Best regards, Yu-wen |
| 5/30/2018 4:24 AM | |
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Joined: 10/7/2009 Last visit: 3/6/2025 Posts: 266 Rating:
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Dear minhkhanh, No, you don't need any communication module. The integrated interface of the CPU is enough. MQTT works on top of the TCP/IP protocol, so you need first to be familiar with the TCP/IP and the communication mechanism of the PLC. This is very hard to tell here. To connect your PLC to internet, the below link might give you some hints: How to access S7-1200 by Internet? Best regards, Yu-wen |
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