• GLOBAL > PLC > SPH > Communication (Ethernet) > When I use the Ethernet module (NP1L-ET1), can I use a same message port No. (SPORT_NO) to establish multiple connections (use multiple M_OPEN)?
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  • Displayed Date : 2023/04/25 19:00
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When I use the Ethernet module (NP1L-ET1), can I use a same message port No. (SPORT_NO) to establish multiple connections (use multiple M_OPEN)?

When I use the Ethernet module (NP1L-ET1), can I use a same message port No. (SPORT_NO) to establish multiple connections (use multiple M_OPEN)?
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Answer

The SX does not allow the use of a single SPORT_NO (range_ 1 to 127) for multiple connections simultaneously. When you want to connect multiple ports, use a different SPORT_NO for each M_OPEN.