• GLOBAL > PLC > SPH > Communication (Ethernet) > I use the Ethernet module (NP1L-ET1/ET2) and using communication FB (M_OPEN). M_OPEN sets two ports of RPORT_NO and SPORT_NO. Does this mean that o...
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  • Displayed Date : 2023/04/25 19:00
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I use the Ethernet module (NP1L-ET1/ET2) and using communication FB (M_OPEN). M_OPEN sets two ports of RPORT_NO and SPORT_NO. Does this mean that one M_OPEN consumes two ports?

I use the Ethernet module (NP1L-ET1/ET2) and using communication FB (M_OPEN). M_OPEN sets two ports of RPORT_NO and SPORT_NO. Does this mean that one M_OPEN consumes two ports?
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Answer

One M_OPEN consumes one port of SPORT_NO, which is the local port. RPORT_NO is the port of the other end of the communication seen from the SX.