Support up to 4 mod-IOs

coupler/mod_io_i2c.h

 // global relay state - XXX: use a list rather than individual variables
 uint8_t I2C_0_RELAYS_STATE = 0; // state of 4 relays at I2C slave 0
 uint8_t I2C_1_RELAYS_STATE = 0; // state of 4 relays at I2C slave 1
+uint8_t I2C_2_RELAYS_STATE = 0; // state of 4 relays at I2C slave 4
+uint8_t I2C_3_RELAYS_STATE = 0; // state of 4 relays at I2C slave 3
 
 // the default addresses of MOD-IOs
 static char *DEFAULT_I2C_0_ADDR = "0x58";

coupler/mod_io_opc_ua.h

@@ -117,69 +117,106 @@ static void beforeReadTimeAnalongIn(int addr,uint8_t read_addr, const UA_DataVal
     }
 }
 
+// I2C0
 static void beforeReadTimeI2C0Ain0(UA_Server *server,
                                    const UA_NodeId *sessionId, void *sessionContext,
                                    const UA_NodeId *nodeid, void *nodeContext,
-                                   const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[0], 0x30, data);
-}
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[0], 0x30, data);}
 
 static void beforeReadTimeI2C0Ain1(UA_Server *server,
                                    const UA_NodeId *sessionId, void *sessionContext,
                                    const UA_NodeId *nodeid, void *nodeContext,
-                                   const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[0], 0x31, data);
-}
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[0], 0x31, data);}
 
 static void beforeReadTimeI2C0Ain2(UA_Server *server,
                                    const UA_NodeId *sessionId, void *sessionContext,
                                    const UA_NodeId *nodeid, void *nodeContext,
-                                   const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[0], 0x32, data);
-}
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[0], 0x32, data);}
 
 static void beforeReadTimeI2C0Ain3(UA_Server *server,
                                    const UA_NodeId *sessionId, void *sessionContext,
                                    const UA_NodeId *nodeid, void *nodeContext,
-                                   const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[0], 0x33, data);
-}
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[0], 0x33, data);}
 
+// I2C1
 static void beforeReadTimeI2C1Ain0(UA_Server *server,
                                    const UA_NodeId *sessionId, void *sessionContext,
                                    const UA_NodeId *nodeid, void *nodeContext,
-                                   const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[1], 0x30, data);
-}
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[1], 0x30, data);}
 
 static void beforeReadTimeI2C1Ain1(UA_Server *server,
                                    const UA_NodeId *sessionId, void *sessionContext,
                                    const UA_NodeId *nodeid, void *nodeContext,
-                                   const UA_NumericRange *range, const UA_DataValue *data)
-{
-   beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[1], 0x31, data);
-}
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+   beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[1], 0x31, data);}
 
 static void beforeReadTimeI2C1Ain2(UA_Server *server,
                                    const UA_NodeId *sessionId, void *sessionContext,
                                    const UA_NodeId *nodeid, void *nodeContext,
-                                   const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[1], 0x32, data);
-}
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[1], 0x32, data);}
 
 static void beforeReadTimeI2C1Ain3(UA_Server *server,
                                    const UA_NodeId *sessionId, void *sessionContext,
                                    const UA_NodeId *nodeid, void *nodeContext,
-                                   const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[1], 0x33, data);
-}
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[1], 0x33, data);}
+
+// I2C2
+static void beforeReadTimeI2C2Ain0(UA_Server *server,
+                                   const UA_NodeId *sessionId, void *sessionContext,
+                                   const UA_NodeId *nodeid, void *nodeContext,
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[2], 0x30, data);}
+
+static void beforeReadTimeI2C2Ain1(UA_Server *server,
+                                   const UA_NodeId *sessionId, void *sessionContext,
+                                   const UA_NodeId *nodeid, void *nodeContext,
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+   beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[2], 0x31, data);}
+
+static void beforeReadTimeI2C2Ain2(UA_Server *server,
+                                   const UA_NodeId *sessionId, void *sessionContext,
+                                   const UA_NodeId *nodeid, void *nodeContext,
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[2], 0x32, data);}
+
+static void beforeReadTimeI2C2Ain3(UA_Server *server,
+                                   const UA_NodeId *sessionId, void *sessionContext,
+                                   const UA_NodeId *nodeid, void *nodeContext,
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[2], 0x33, data);}
+
+// I2C3
+static void beforeReadTimeI2C3Ain0(UA_Server *server,
+                                   const UA_NodeId *sessionId, void *sessionContext,
+                                   const UA_NodeId *nodeid, void *nodeContext,
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[3], 0x30, data);}
+
+static void beforeReadTimeI2C3Ain1(UA_Server *server,
+                                   const UA_NodeId *sessionId, void *sessionContext,
+                                   const UA_NodeId *nodeid, void *nodeContext,
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+   beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[3], 0x31, data);}
+
+static void beforeReadTimeI2C3Ain2(UA_Server *server,
+                                   const UA_NodeId *sessionId, void *sessionContext,
+                                   const UA_NodeId *nodeid, void *nodeContext,
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[3], 0x32, data);}
+
+static void beforeReadTimeI2C3Ain3(UA_Server *server,
+                                   const UA_NodeId *sessionId, void *sessionContext,
+                                   const UA_NodeId *nodeid, void *nodeContext,
+                                   const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeAnalongIn(I2C_SLAVE_ADDR_LIST[3], 0x33, data);}
+
 
 // Digital Inputs
 static void beforeReadTimeDigitalIn(int addr,
@@ -208,70 +245,107 @@ static void beforeReadTimeDigitalIn(int addr,
     }
 }
 
+// I2C0
 static void beforeReadTimeI2C0In0(UA_Server *server,
                                   const UA_NodeId *sessionId, void *sessionContext,
                                   const UA_NodeId *nodeid, void *nodeContext,
-                                  const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[0], 0, data);
-}
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[0], 0, data);}
 
 static void beforeReadTimeI2C0In1(UA_Server *server,
                                   const UA_NodeId *sessionId, void *sessionContext,
                                   const UA_NodeId *nodeid, void *nodeContext,
-                                  const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[0], 1, data);
-}
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[0], 1, data);}
 
 static void beforeReadTimeI2C0In2(UA_Server *server,
                                   const UA_NodeId *sessionId, void *sessionContext,
                                   const UA_NodeId *nodeid, void *nodeContext,
-                                  const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[0], 2, data);
-}
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[0], 2, data);}
 
 static void beforeReadTimeI2C0In3(UA_Server *server,
                                   const UA_NodeId *sessionId, void *sessionContext,
                                   const UA_NodeId *nodeid, void *nodeContext,
-                                  const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[0], 3, data);
-}
-
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[0], 3, data);}
 
+// I2C1
 static void beforeReadTimeI2C1In0(UA_Server *server,
                                   const UA_NodeId *sessionId, void *sessionContext,
                                   const UA_NodeId *nodeid, void *nodeContext,
-                                  const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[1], 0, data);
-}
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[1], 0, data);}
 
 static void beforeReadTimeI2C1In1(UA_Server *server,
                                   const UA_NodeId *sessionId, void *sessionContext,
                                   const UA_NodeId *nodeid, void *nodeContext,
-                                  const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[1], 1, data);
-}
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[1], 1, data);}
 
 static void beforeReadTimeI2C1In2(UA_Server *server,
                                   const UA_NodeId *sessionId, void *sessionContext,
                                   const UA_NodeId *nodeid, void *nodeContext,
-                                  const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[1], 2, data);
-}
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[1], 2, data);}
 
 static void beforeReadTimeI2C1In3(UA_Server *server,
                                   const UA_NodeId *sessionId, void *sessionContext,
                                   const UA_NodeId *nodeid, void *nodeContext,
-                                  const UA_NumericRange *range, const UA_DataValue *data)
-{
-    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[1], 3, data);
-}
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[1], 3, data);}
+
+// I2C2
+static void beforeReadTimeI2C2In0(UA_Server *server,
+                                  const UA_NodeId *sessionId, void *sessionContext,
+                                  const UA_NodeId *nodeid, void *nodeContext,
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[2], 0, data);}
+
+static void beforeReadTimeI2C2In1(UA_Server *server,
+                                  const UA_NodeId *sessionId, void *sessionContext,
+                                  const UA_NodeId *nodeid, void *nodeContext,
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[2], 1, data);}
+
+static void beforeReadTimeI2C2In2(UA_Server *server,
+                                  const UA_NodeId *sessionId, void *sessionContext,
+                                  const UA_NodeId *nodeid, void *nodeContext,
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[2], 2, data);}
+
+static void beforeReadTimeI2C2In3(UA_Server *server,
+                                  const UA_NodeId *sessionId, void *sessionContext,
+                                  const UA_NodeId *nodeid, void *nodeContext,
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[2], 3, data);}
+
+
+// I2C3
+static void beforeReadTimeI2C3In0(UA_Server *server,
+                                  const UA_NodeId *sessionId, void *sessionContext,
+                                  const UA_NodeId *nodeid, void *nodeContext,
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[3], 0, data);}
+
+static void beforeReadTimeI2C3In1(UA_Server *server,
+                                  const UA_NodeId *sessionId, void *sessionContext,
+                                  const UA_NodeId *nodeid, void *nodeContext,
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[3], 1, data);}
+
+static void beforeReadTimeI2C3In2(UA_Server *server,
+                                  const UA_NodeId *sessionId, void *sessionContext,
+                                  const UA_NodeId *nodeid, void *nodeContext,
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[3], 2, data);}
+
+static void beforeReadTimeI2C3In3(UA_Server *server,
+                                  const UA_NodeId *sessionId, void *sessionContext,
+                                  const UA_NodeId *nodeid, void *nodeContext,
+                                  const UA_NumericRange *range, const UA_DataValue *data){
+    beforeReadTimeDigitalIn(I2C_SLAVE_ADDR_LIST[3], 3, data);}
+
 
 // Relays
 static void afterWriteTime(UA_Server *server,
@@ -310,67 +384,102 @@ static void setI2CSlaveRelayState(int addr,
 static void afterWriteTimeI2C0_0(UA_Server *server,
                                  const UA_NodeId *sessionId, void *sessionContext,
                                  const UA_NodeId *nodeId, void *nodeContext,
-                                 const UA_NumericRange *range, const UA_DataValue *data)
-{
-     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[0], 0, &I2C_0_RELAYS_STATE, data);
-}
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[0], 0, &I2C_0_RELAYS_STATE, data);}
 
 static void afterWriteTimeI2C0_1(UA_Server *server,
                                  const UA_NodeId *sessionId, void *sessionContext,
                                  const UA_NodeId *nodeId, void *nodeContext,
-                                 const UA_NumericRange *range, const UA_DataValue *data)
-{
-     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[0], 1, &I2C_0_RELAYS_STATE, data);
-}
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[0], 1, &I2C_0_RELAYS_STATE, data);}
 
 static void afterWriteTimeI2C0_2(UA_Server *server,
                                  const UA_NodeId *sessionId, void *sessionContext,
                                  const UA_NodeId *nodeId, void *nodeContext,
-                                 const UA_NumericRange *range, const UA_DataValue *data)
-{
-     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[0], 2, &I2C_0_RELAYS_STATE, data);
-}
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[0], 2, &I2C_0_RELAYS_STATE, data);}
 
 static void afterWriteTimeI2C0_3(UA_Server *server,
                                  const UA_NodeId *sessionId, void *sessionContext,
                                  const UA_NodeId *nodeId, void *nodeContext,
-                                 const UA_NumericRange *range, const UA_DataValue *data)
-{
-     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[0], 3, &I2C_0_RELAYS_STATE, data);
-}
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[0], 3, &I2C_0_RELAYS_STATE, data);}
 
 // I2C1
 static void afterWriteTimeI2C1_0(UA_Server *server,
                                  const UA_NodeId *sessionId, void *sessionContext,
                                  const UA_NodeId *nodeId, void *nodeContext,
-                                 const UA_NumericRange *range, const UA_DataValue *data)
-{
-     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[1], 0, &I2C_1_RELAYS_STATE, data);
-}
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[1], 0, &I2C_1_RELAYS_STATE, data);}
 
 static void afterWriteTimeI2C1_1(UA_Server *server,
                                  const UA_NodeId *sessionId, void *sessionContext,
                                  const UA_NodeId *nodeId, void *nodeContext,
-                                 const UA_NumericRange *range, const UA_DataValue *data)
-{
-     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[1], 1, &I2C_1_RELAYS_STATE, data);
-}
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[1], 1, &I2C_1_RELAYS_STATE, data);}
 
 static void afterWriteTimeI2C1_2(UA_Server *server,
                                  const UA_NodeId *sessionId, void *sessionContext,
                                  const UA_NodeId *nodeId, void *nodeContext,
-                                 const UA_NumericRange *range, const UA_DataValue *data)
-{
-     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[1], 2, &I2C_1_RELAYS_STATE, data);
-}
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[1], 2, &I2C_1_RELAYS_STATE, data);}
 
 static void afterWriteTimeI2C1_3(UA_Server *server,
                                  const UA_NodeId *sessionId, void *sessionContext,
                                  const UA_NodeId *nodeId, void *nodeContext,
-                                 const UA_NumericRange *range, const UA_DataValue *data)
-{
-     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[1], 3, &I2C_1_RELAYS_STATE, data);
-}
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[1], 3, &I2C_1_RELAYS_STATE, data);}
+
+// I2C2
+static void afterWriteTimeI2C2_0(UA_Server *server,
+                                 const UA_NodeId *sessionId, void *sessionContext,
+                                 const UA_NodeId *nodeId, void *nodeContext,
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[2], 0, &I2C_2_RELAYS_STATE, data);}
+
+static void afterWriteTimeI2C2_1(UA_Server *server,
+                                 const UA_NodeId *sessionId, void *sessionContext,
+                                 const UA_NodeId *nodeId, void *nodeContext,
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[2], 1, &I2C_2_RELAYS_STATE, data);}
+
+static void afterWriteTimeI2C2_2(UA_Server *server,
+                                 const UA_NodeId *sessionId, void *sessionContext,
+                                 const UA_NodeId *nodeId, void *nodeContext,
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[2], 2, &I2C_2_RELAYS_STATE, data);}
+
+static void afterWriteTimeI2C2_3(UA_Server *server,
+                                 const UA_NodeId *sessionId, void *sessionContext,
+                                 const UA_NodeId *nodeId, void *nodeContext,
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[2], 3, &I2C_2_RELAYS_STATE, data);}
+
+// I2C3
+static void afterWriteTimeI2C3_0(UA_Server *server,
+                                 const UA_NodeId *sessionId, void *sessionContext,
+                                 const UA_NodeId *nodeId, void *nodeContext,
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[3], 0, &I2C_3_RELAYS_STATE, data);}
+
+static void afterWriteTimeI2C3_1(UA_Server *server,
+                                 const UA_NodeId *sessionId, void *sessionContext,
+                                 const UA_NodeId *nodeId, void *nodeContext,
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[3], 1, &I2C_3_RELAYS_STATE, data);}
+
+static void afterWriteTimeI2C3_2(UA_Server *server,
+                                 const UA_NodeId *sessionId, void *sessionContext,
+                                 const UA_NodeId *nodeId, void *nodeContext,
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[3], 2, &I2C_3_RELAYS_STATE, data);}
+
+static void afterWriteTimeI2C3_3(UA_Server *server,
+                                 const UA_NodeId *sessionId, void *sessionContext,
+                                 const UA_NodeId *nodeId, void *nodeContext,
+                                 const UA_NumericRange *range, const UA_DataValue *data){
+     setI2CSlaveRelayState(I2C_SLAVE_ADDR_LIST[3], 3, &I2C_3_RELAYS_STATE, data);}
+
 
 static void addValueCallbackToCurrentTimeVariable(UA_Server *server)
 {
@@ -378,8 +487,8 @@ static void addValueCallbackToCurrentTimeVariable(UA_Server *server)
     int device_number, offset_number;
     char *node_id = malloc(sizeof(char) * 10);
 
-    // list of relays, digital and analog callbacks for all devices (XXX: for now only two, add more!)
-    static void (*callables[24])
+    // list of relays, digital and analog callbacks for all devices (XXX: for now only 4 outof 127 possible!)
+    static void (*callables[48])
                                  (UA_Server *server, const UA_NodeId *sessionId, void *sessionContext,
                                   const UA_NodeId *nodeId, void *nodeContext, const UA_NumericRange *range,
                                   const UA_DataValue *data) = {// relays - IC0
@@ -412,7 +521,40 @@ static void addValueCallbackToCurrentTimeVariable(UA_Server *server)
                                                                beforeReadTimeI2C1Ain0,
                                                                beforeReadTimeI2C1Ain1,
                                                                beforeReadTimeI2C1Ain2,
-                                                               beforeReadTimeI2C1Ain3};
+                                                               beforeReadTimeI2C1Ain3,
+
+                                                               // relays - IC2
+                                                               afterWriteTimeI2C2_0,
+                                                               afterWriteTimeI2C2_1,
+                                                               afterWriteTimeI2C2_2,
+                                                               afterWriteTimeI2C2_3,
+                                                               // digital - IC2
+                                                               beforeReadTimeI2C2In0,
+                                                               beforeReadTimeI2C2In1,
+                                                               beforeReadTimeI2C2In2,
+                                                               beforeReadTimeI2C2In3,
+                                                               // analong - IC2
+                                                               beforeReadTimeI2C2Ain0,
+                                                               beforeReadTimeI2C2Ain1,
+                                                               beforeReadTimeI2C2Ain2,
+                                                               beforeReadTimeI2C2Ain3,
+
+                                                               // relays - IC3
+                                                               afterWriteTimeI2C3_0,
+                                                               afterWriteTimeI2C3_1,
+                                                               afterWriteTimeI2C3_2,
+                                                               afterWriteTimeI2C3_3,
+                                                               // digital - IC3
+                                                               beforeReadTimeI2C3In0,
+                                                               beforeReadTimeI2C3In1,
+                                                               beforeReadTimeI2C3In2,
+                                                               beforeReadTimeI2C3In3,
+                                                               // analog - IC1
+                                                               beforeReadTimeI2C3Ain0,
+                                                               beforeReadTimeI2C3Ain1,
+                                                               beforeReadTimeI2C3Ain2,
+                                                               beforeReadTimeI2C3Ain3,
+                                };
 
     // set proper callbacks from list of all
     for (device_number = 0; device_number < device_slave_list_length;  device_number++){