diff --git a/library.properties b/library.properties
index 688951b..9309594 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=AlPlc_Opta
-version=1.0.3
+version=1.0.4
 author=Arduino
 maintainer=Arduino <info@arduino.cc>
 sentence=Arduino IDE PLC runtime library for Arduino Opta
diff --git a/src/AlPlc_Opta.h b/src/AlPlc_Opta.h
index 673a8b9..60aec91 100644
--- a/src/AlPlc_Opta.h
+++ b/src/AlPlc_Opta.h
@@ -10,12 +10,13 @@
 #define ALPLC_OPTA_H
 
 #include <ArduinoRS485.h>
-#include <EthernetInterface.h>	//Ethernet, sockets, etc
+#include <PortentaEthernet.h>
+
+extern "C" void sysMbMRtu_SetPostDelay(uint16_t delay);
 
 extern uint8_t m_PLCSharedVarsOutputBuf[];
 extern uint8_t m_PLCSharedVarsInputBuf[];
 
-extern EthernetInterface m_netInterface;
 
 class AlPlc
 {
diff --git a/src/cortex-m7/libAlIOPlugin.a b/src/cortex-m7/libAlIOPlugin.a
index 81d1fdf..684677c 100644
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diff --git a/src/cortex-m7/libAlModbusRTUPlugin.a b/src/cortex-m7/libAlModbusRTUPlugin.a
index 3f6d0bf..da151ad 100644
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diff --git a/src/cortex-m7/libAlModbusTCPMasterPlugin.a b/src/cortex-m7/libAlModbusTCPMasterPlugin.a
index 7ad3d3e..1155811 100644
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diff --git a/src/cortex-m7/libAlPlc.a b/src/cortex-m7/libAlPlc.a
index b78a2e8..e2df1aa 100644
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diff --git a/src/cortex-m7/libAlPlcRuntimeCoreLib.a b/src/cortex-m7/libAlPlcRuntimeCoreLib.a
index 4c9be01..5c1d344 100644
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diff --git a/src/cortex-m7/libAlSoftScopePlugin.a b/src/cortex-m7/libAlSoftScopePlugin.a
index 02ace48..8a8e4be 100644
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