diff --git a/lib/channel/GwChannel.cpp b/lib/channel/GwChannel.cpp
index d25841d..ef9d64e 100644
--- a/lib/channel/GwChannel.cpp
+++ b/lib/channel/GwChannel.cpp
@@ -57,7 +57,7 @@ GwChannel::GwChannel(GwLog *logger,
     this->logger = logger;
     this->name=name;
     this->sourceId=sourceId;
-    this->maxSourceId=sourceId;
+    this->maxSourceId=maxSourceId;
     this->countIn=new GwCounter<String>(String("count")+name+String("in"));
     this->countOut=new GwCounter<String>(String("count")+name+String("out"));
     this->impl=NULL;
@@ -146,12 +146,15 @@ bool GwChannel::canReceive(const char *buffer){
 }
 
 int GwChannel::getJsonSize(){
-    int rt=2;
+    int rt=JSON_OBJECT_SIZE(6);
     if (countIn) rt+=countIn->getJsonSize();
     if (countOut) rt+=countOut->getJsonSize();
     return rt;
 }
 void GwChannel::toJson(GwJsonDocument &doc){
+    JsonObject jo=doc.createNestedObject("ch"+name);
+    jo["id"]=sourceId;
+    jo["max"]=maxSourceId;
     if (countOut) countOut->toJson(doc);
     if (countIn) countIn->toJson(doc);
 }
diff --git a/lib/channel/GwChannelList.cpp b/lib/channel/GwChannelList.cpp
index 5465ea9..6d803c4 100644
--- a/lib/channel/GwChannelList.cpp
+++ b/lib/channel/GwChannelList.cpp
@@ -58,6 +58,128 @@ void GwChannelList::allChannels(ChannelAction action){
         action(*it);
     }
 }
+typedef struct {
+    int id;
+    const char *baud;
+    const char *receive;
+    const char *send;
+    const char *direction;
+    const char *toN2K;
+    const char *readF;
+    const char *writeF;
+    const char *name;
+} SerialParam;
+
+static  SerialParam serialParameters[]={
+    {
+        .id=SERIAL1_CHANNEL_ID,
+        .baud=GwConfigDefinitions::serialBaud,
+        .receive=GwConfigDefinitions::receiveSerial,
+        .send=GwConfigDefinitions::sendSerial,
+        .direction=GwConfigDefinitions::serialDirection,
+        .toN2K=GwConfigDefinitions::serialToN2k,
+        .readF=GwConfigDefinitions::serialReadF,
+        .writeF=GwConfigDefinitions::serialWriteF,
+        .name="Serial"
+    },
+    {
+        .id=SERIAL2_CHANNEL_ID,
+        .baud=GwConfigDefinitions::serial2Baud,
+        .receive=GwConfigDefinitions::receiveSerial2,
+        .send=GwConfigDefinitions::sendSerial2,
+        .direction=GwConfigDefinitions::serial2Dir,
+        .toN2K=GwConfigDefinitions::serial2ToN2k,
+        .readF=GwConfigDefinitions::serial2ReadF,
+        .writeF=GwConfigDefinitions::serial2WriteF,
+        .name="Serial2"
+    }
+};
+
+static SerialParam *getSerialParam(int id){
+    for (size_t idx=0;idx<sizeof(serialParameters)/sizeof(SerialParam*);idx++){
+        if (serialParameters[idx].id == id) return &serialParameters[idx];
+    }
+    return nullptr;
+}
+
+void GwChannelList:: addSerial(HardwareSerial *stream,int id,int type,int rx,int tx){
+    const char *mode=nullptr;
+    switch (type)
+    {
+    case GWSERIAL_TYPE_UNI:
+        mode="UNI";
+        break;
+    case GWSERIAL_TYPE_BI:
+        mode="BI";
+        break;
+    case GWSERIAL_TYPE_RX:
+        mode="RX";
+        break;
+    case GWSERIAL_TYPE_TX:
+        mode="TX";
+        break;
+    }
+    if (mode == nullptr) {
+        LOG_DEBUG(GwLog::ERROR,"unknown serial type %d",type);
+        return;
+    }
+    addSerial(stream,id,mode,rx,tx);
+}
+void GwChannelList::addSerial(HardwareSerial *serialStream,int id,const String &mode,int rx,int tx){
+    SerialParam *param=getSerialParam(id);
+    if (param == nullptr){
+        logger->logDebug(GwLog::ERROR,"trying to set up an unknown serial channel: %d",id);
+        return;
+    }
+    if (rx < 0 && tx < 0){
+        logger->logDebug(GwLog::ERROR,"useless config for serial %d: both rx/tx undefined");
+        return;
+    }
+    modes[id]=String(mode);
+    bool canRead=false;
+    bool canWrite=false;
+    if (mode == "BI"){
+        canRead=config->getBool(param->receive);
+        canWrite=config->getBool(param->send);
+    }
+    if (mode == "TX"){
+        canWrite=true;
+    }
+    if (mode == "RX"){
+        canRead=true;
+    }
+    if (mode == "UNI"){
+        String cfgMode=config->getString(param->direction);
+        if (cfgMode == "receive"){
+            canRead=true;
+        }
+        if (cfgMode == "send"){
+            canWrite=true;
+        }
+    }
+    if (rx < 0) canRead=false;
+    if (tx < 0) canWrite=false;
+    LOG_DEBUG(GwLog::DEBUG,"serial set up: mode=%s,rx=%d,canRead=%d,tx=%d,canWrite=%d",
+        mode.c_str(),rx,(int)canRead,tx,(int)canWrite);
+    serialStream->begin(config->getInt(param->baud,115200),SERIAL_8N1,rx,tx);
+    GwSerial *serial = new GwSerial(logger, serialStream, id, canRead);
+    LOG_DEBUG(GwLog::LOG, "starting serial %d ", id);
+    GwChannel *channel = new GwChannel(logger, param->name, id);
+    channel->setImpl(serial);
+    channel->begin(
+        canRead || canWrite,
+        canWrite,
+        canRead,
+        config->getString(param->readF),
+        config->getString(param->writeF),
+        false,
+        config->getBool(param->toN2K),
+        false,
+        false);
+    LOG_DEBUG(GwLog::LOG, "%s", channel->toString().c_str());
+    theChannels.push_back(channel);
+}
+
 void GwChannelList::begin(bool fallbackSerial){
     LOG_DEBUG(GwLog::DEBUG,"GwChannelList::begin");
     GwChannel *channel=NULL;
@@ -85,7 +207,7 @@ void GwChannelList::begin(bool fallbackSerial){
     //TCP server
     sockets=new GwSocketServer(config,logger,MIN_TCP_CHANNEL_ID);
     sockets->begin();
-    channel=new GwChannel(logger,"TCP",MIN_TCP_CHANNEL_ID,MIN_TCP_CHANNEL_ID+10);
+    channel=new GwChannel(logger,"TCPserver",MIN_TCP_CHANNEL_ID,MIN_TCP_CHANNEL_ID+10);
     channel->setImpl(sockets);
     channel->begin(
         true,
@@ -102,57 +224,33 @@ void GwChannelList::begin(bool fallbackSerial){
     theChannels.push_back(channel);
 
     //serial 1
-    bool serCanRead=true;
-    bool serCanWrite=true;
-    int serialrx=-1;
-    int serialtx=-1;
-    #ifdef GWSERIAL_MODE
-        #ifdef GWSERIAL_TX
-            serialtx=GWSERIAL_TX;
-        #endif
-        #ifdef GWSERIAL_RX
-            serialrx=GWSERIAL_RX;
-        #endif
-        if (serialrx != -1 && serialtx != -1){
-            serialMode=GWSERIAL_MODE;
-        }
+    #ifndef GWSERIAL_TX
+      #define GWSERIAL_TX -1
+    #endif
+    #ifndef GWSERIAL_RX
+      #define GWSERIAL_RX -1
+    #endif
+    #ifdef GWSERIAL_TYPE
+        addSerial(&Serial1,SERIAL1_CHANNEL_ID,GWSERIAL_TYPE,GWSERIAL_RX,GWSERIAL_TX);
+    #else
+        #ifdef GWSERIAL_MODE
+            addSerial(&Serial1,SERIAL1_CHANNEL_ID,GWSERIAL_MODE,GWSERIAL_RX,GWSERIAL_TX);
+        #endif
+    #endif
+    //serial 2
+    #ifndef GWSERIAL2_TX
+      #define GWSERIAL2_TX -1
+    #endif
+    #ifndef GWSERIAL2_RX
+      #define GWSERIAL2_RX -1
+    #endif
+    #ifdef GWSERIAL2_TYPE
+        addSerial(&Serial2,SERIAL2_CHANNEL_ID,GWSERIAL2_TYPE,GWSERIAL2_RX,GWSERIAL2_TX);
+    #else
+        #ifdef GWSERIAL2_MODE
+            addSerial(&Serial2,SERIAL2_CHANNEL_ID,GWSERIAL2_MODE,GWSERIAL2_RX,GWSERIAL2_TX);
+        #endif
     #endif
-    //the serial direction is from the config (only valid for mode UNI)
-    String serialDirection=config->getString(config->serialDirection);
-    //we only consider the direction if mode is UNI
-    if (serialMode != String("UNI")){
-        serialDirection=String("");
-        //if mode is UNI it depends on the selection
-        serCanRead=config->getBool(config->receiveSerial);
-        serCanWrite=config->getBool(config->sendSerial);
-    }
-    if (serialDirection == "receive" || serialDirection == "off" || serialMode == "RX") serCanWrite=false;
-    if (serialDirection == "send" || serialDirection == "off" || serialMode == "TX") serCanRead=false;
-    LOG_DEBUG(GwLog::DEBUG,"serial set up: mode=%s,direction=%s,rx=%d,tx=%d",
-        serialMode.c_str(),serialDirection.c_str(),serialrx,serialtx
-        );
-    if (serialtx != -1 || serialrx != -1 ){
-        LOG_DEBUG(GwLog::LOG,"creating serial interface rx=%d, tx=%d",serialrx,serialtx);
-        Serial1.begin(config->getInt(config->serialBaud,115200),SERIAL_8N1,serialrx,serialtx);
-        GwSerial *serial=new GwSerial(logger,&Serial1,SERIAL1_CHANNEL_ID,serCanRead);
-        LOG_DEBUG(GwLog::LOG,"starting serial1 ");
-        channel=new GwChannel(logger,"SER",SERIAL1_CHANNEL_ID);
-        channel->setImpl(serial);
-        channel->begin(
-            serCanRead || serCanWrite,
-            serCanWrite,
-            serCanRead,
-            config->getString(config->serialReadF),
-            config->getString(config->serialWriteF),
-            false,
-            config->getBool(config->serialToN2k),
-            false,
-            false    
-        );
-        LOG_DEBUG(GwLog::LOG,"%s",channel->toString().c_str());
-        theChannels.push_back(channel);
-    }
-
     //tcp client
     bool tclEnabled=config->getBool(config->tclEnabled);
     channel=new GwChannel(logger,"TCPClient",TCP_CLIENT_CHANNEL_ID);
@@ -180,6 +278,11 @@ void GwChannelList::begin(bool fallbackSerial){
     LOG_DEBUG(GwLog::LOG,"%s",channel->toString().c_str());  
     logger->flush();
 }
+String GwChannelList::getMode(int id){
+    auto it=modes.find(id);
+    if (it != modes.end()) return it->second;
+    return "UNKNOWN";
+}
 int GwChannelList::getJsonSize(){
     int rt=0;
     allChannels([&](GwChannel *c){
diff --git a/lib/channel/GwChannelList.h b/lib/channel/GwChannelList.h
index 1cca126..1bddfca 100644
--- a/lib/channel/GwChannelList.h
+++ b/lib/channel/GwChannelList.h
@@ -1,12 +1,14 @@
 #pragma once
 #include <functional>
 #include <vector>
+#include <map>
 #include <WString.h>
 #include "GwChannel.h"
 #include "GwLog.h"
 #include "GWConfig.h"
 #include "GwJsonDocument.h"
 #include "GwApi.h"
+#include <HardwareSerial.h>
 
 //NMEA message channels
 #define N2K_CHANNEL_ID 0
@@ -25,10 +27,11 @@ class GwChannelList{
         GwConfigHandler *config;
         typedef std::vector<GwChannel *> ChannelList;
         ChannelList theChannels;
-        
+        std::map<int,String> modes;
         GwSocketServer *sockets;
         GwTcpClient *client;
-        String serialMode=F("NONE");
+        void addSerial(HardwareSerial *stream,int id,const String &mode,int rx,int tx);
+        void addSerial(HardwareSerial *stream,int id,int type,int rx,int tx);
     public:
         GwChannelList(GwLog *logger, GwConfigHandler *config);
         typedef std::function<void(GwChannel *)> ChannelAction;
@@ -41,6 +44,6 @@ class GwChannelList{
         //single channel
         GwChannel *getChannelById(int sourceId);
         void fillStatus(GwApi::Status &status);
-
+        String getMode(int id);
 
 };
diff --git a/lib/exampletask/GwExampleTask.h b/lib/exampletask/GwExampleTask.h
index 1ff2219..643c478 100644
--- a/lib/exampletask/GwExampleTask.h
+++ b/lib/exampletask/GwExampleTask.h
@@ -9,6 +9,11 @@
 #define GWSERIAL_TX 26
 #define GWSERIAL_RX 32
 #define GWSERIAL_MODE "UNI"
+
+#define GWSERIAL2_TX 14
+#define GWSERIAL2_RX 15
+#define GWSERIAL2_MODE "BI"
+
 #define GWBUTTON_PIN GPIO_NUM_39
 #define GWBUTTON_ACTIVE LOW
 //if GWBUTTON_PULLUPDOWN we enable a pulup/pulldown
diff --git a/lib/hardware/GwHardware.h b/lib/hardware/GwHardware.h
index fa133ce..2dc67e6 100644
--- a/lib/hardware/GwHardware.h
+++ b/lib/hardware/GwHardware.h
@@ -13,6 +13,11 @@
 */
 #ifndef _GWHARDWARE_H
 #define _GWHARDWARE_H
+#define GWSERIAL_TYPE_UNI 1
+#define GWSERIAL_TYPE_BI 2
+#define GWSERIAL_TYPE_RX 3
+#define GWSERIAL_TYPE_TX 4
+
 #include <HardwareSerial.h>
 #include "GwUserTasks.h"
 
@@ -117,7 +122,7 @@
 #define ESP32_CAN_RX_PIN GPIO_NUM_4
 //serial input only
 #define GWSERIAL_RX GPIO_NUM_16
-#define GWSERIAL_MODE "RX"
+#define GWSERIAL_TYPE GWSERIAL_TYPE_RX
 
 #define GWBUTTON_PIN GPIO_NUM_0
 #define GWBUTTON_ACTIVE LOW
@@ -132,26 +137,26 @@
 #ifdef SERIAL_GROOVE_485
   #define GWSERIAL_TX GROOVE_PIN_1
   #define GWSERIAL_RX GROOVE_PIN_2
-  #define GWSERIAL_MODE "UNI"
+  #define GWSERIAL_TYPE GWSERIAL_TYPE_UNI 
 #endif
 #ifdef SERIAL_GROOVE_232
   #define GWSERIAL_TX GROOVE_PIN_1
   #define GWSERIAL_RX GROOVE_PIN_2
-  #define GWSERIAL_MODE "BI"
+  #define GWSERIAL_TYPE GWSERIAL_TYPE_BI
 #endif
 
 //M5 Serial (Atomic RS232 Base)
 #ifdef M5_SERIAL_KIT_232 
   #define GWSERIAL_TX BOARD_LEFT2
   #define GWSERIAL_RX BOARD_LEFT1
-  #define GWSERIAL_MODE "BI"
+  #define GWSERIAL_TYPE GWSERIAL_TYPE_BI
 #endif
 
 //M5 Serial (Atomic RS485 Base)
 #ifdef M5_SERIAL_KIT_485 
   #define GWSERIAL_TX BOARD_LEFT2
   #define GWSERIAL_RX BOARD_LEFT1
-  #define GWSERIAL_MODE "UNI"
+  #define GWSERIAL_TYPE GWSERIAL_TYPE_UNI
 #endif
 
 //can kit for M5 Atom
@@ -165,5 +170,4 @@
   #define ESP32_CAN_RX_PIN GROOVE_PIN_2
 #endif
 
-
 #endif
diff --git a/lib/nmea2ktwai/Nmea2kTwai.cpp b/lib/nmea2ktwai/Nmea2kTwai.cpp
index a5f0312..77c51d9 100644
--- a/lib/nmea2ktwai/Nmea2kTwai.cpp
+++ b/lib/nmea2ktwai/Nmea2kTwai.cpp
@@ -9,12 +9,18 @@ static const int TIMEOUT_OFFLINE=256; //# of timeouts to consider offline
 Nmea2kTwai::Nmea2kTwai(gpio_num_t _TxPin,  gpio_num_t _RxPin, unsigned long recP, unsigned long logP):
      tNMEA2000(),RxPin(_RxPin),TxPin(_TxPin)
 {
-    timers.addAction(logP,[this](){logStatus();});
-    timers.addAction(recP,[this](){checkRecovery();});
+    if (RxPin < 0 || TxPin < 0){
+        disabled=true;    
+    }
+    else{
+        timers.addAction(logP,[this](){logStatus();});
+        timers.addAction(recP,[this](){checkRecovery();});
+    }
 }
 
 bool Nmea2kTwai::CANSendFrame(unsigned long id, unsigned char len, const unsigned char *buf, bool wait_sent)
 {
+    if (disabled) return true;
     twai_message_t message;
     memset(&message,0,sizeof(message));
     message.identifier = id;
@@ -35,6 +41,10 @@ bool Nmea2kTwai::CANSendFrame(unsigned long id, unsigned char len, const unsigne
 }
 bool Nmea2kTwai::CANOpen()
 {
+    if (disabled){
+        logDebug(LOG_INFO,"CAN disabled");
+        return true;
+    }
     esp_err_t rt=twai_start();
     if (rt != ESP_OK){
         logDebug(LOG_ERR,"CANOpen failed: %x",(int)rt);
@@ -47,6 +57,7 @@ bool Nmea2kTwai::CANOpen()
 }
 bool Nmea2kTwai::CANGetFrame(unsigned long &id, unsigned char &len, unsigned char *buf)
 {
+    if (disabled) return false;
     twai_message_t message;
     esp_err_t rt=twai_receive(&message,0);
     if (rt != ESP_OK){
@@ -68,6 +79,7 @@ bool Nmea2kTwai::CANGetFrame(unsigned long &id, unsigned char &len, unsigned cha
     return true;
 }
 void Nmea2kTwai::initDriver(){
+    if (disabled) return;
     twai_general_config_t g_config = TWAI_GENERAL_CONFIG_DEFAULT(TxPin,RxPin, TWAI_MODE_NORMAL);
     g_config.tx_queue_len=20;
     twai_timing_config_t t_config = TWAI_TIMING_CONFIG_250KBITS();
@@ -84,13 +96,22 @@ void Nmea2kTwai::initDriver(){
 // and you want to change size of library send frame buffer size. See e.g. NMEA2000_teensy.cpp.
 void Nmea2kTwai::InitCANFrameBuffers()
 {
-    initDriver();
+    if (disabled){
+        logDebug(LOG_INFO,"twai init - disabled");
+    }
+    else{
+        initDriver();
+    }
     tNMEA2000::InitCANFrameBuffers();
     
 }
 Nmea2kTwai::Status Nmea2kTwai::getStatus(){
     twai_status_info_t state;
     Status rt;
+    if (disabled){
+        rt.state=ST_DISABLED;
+        return rt;
+    }
     if (twai_get_status_info(&state) != ESP_OK){
         return rt;
     }
@@ -120,6 +141,7 @@ Nmea2kTwai::Status Nmea2kTwai::getStatus(){
     return rt;
 }
 bool Nmea2kTwai::checkRecovery(){
+    if (disabled) return false;
     Status canState=getStatus();
     bool strt=false;
     if (canState.state != Nmea2kTwai::ST_RUNNING)
@@ -140,6 +162,7 @@ bool Nmea2kTwai::checkRecovery(){
 }
 
 void Nmea2kTwai::loop(){
+    if (disabled) return;
     timers.loop();
 }
 
@@ -157,6 +180,7 @@ Nmea2kTwai::Status Nmea2kTwai::logStatus(){
 }
 
 bool Nmea2kTwai::startRecovery(){
+    if (disabled) return false;
     lastRecoveryStart=millis();
     esp_err_t rt=twai_driver_uninstall();
     if (rt != ESP_OK){
@@ -174,6 +198,7 @@ const char * Nmea2kTwai::stateStr(const Nmea2kTwai::STATE &st){
     case ST_RUNNING: return "RUNNING";
     case ST_STOPPED: return "STOPPED";
     case ST_OFFLINE: return "OFFLINE";
+    case ST_DISABLED: return "DISABLED";
     }
     return "ERROR";
 }
\ No newline at end of file
diff --git a/lib/nmea2ktwai/Nmea2kTwai.h b/lib/nmea2ktwai/Nmea2kTwai.h
index 46e9b0c..456e633 100644
--- a/lib/nmea2ktwai/Nmea2kTwai.h
+++ b/lib/nmea2ktwai/Nmea2kTwai.h
@@ -12,6 +12,7 @@ class Nmea2kTwai : public tNMEA2000{
             ST_BUS_OFF,
             ST_RECOVERING,
             ST_OFFLINE,
+            ST_DISABLED,
             ST_ERROR
         } STATE;
         typedef struct{
@@ -55,6 +56,7 @@ class Nmea2kTwai : public tNMEA2000{
     gpio_num_t RxPin;
     uint32_t txTimeouts=0;
     GwIntervalRunner timers;
+    bool disabled=false;
     unsigned long lastRecoveryStart=0;
 };
 
diff --git a/src/main.cpp b/src/main.cpp
index 5521501..b3b29b7 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -126,7 +126,7 @@ class Nmea2kTwaiLog : public Nmea2kTwai{
  #define ESP32_CAN_RX_PIN GPIO_NUM_NC
 #endif
 
-Nmea2kTwai &NMEA2000=*(new Nmea2kTwaiLog(ESP32_CAN_TX_PIN,ESP32_CAN_RX_PIN,CAN_RECOVERY_PERIOD,&logger));
+Nmea2kTwai &NMEA2000=*(new Nmea2kTwaiLog((gpio_num_t)ESP32_CAN_TX_PIN,(gpio_num_t)ESP32_CAN_RX_PIN,CAN_RECOVERY_PERIOD,&logger));
 
 #ifdef GWBUTTON_PIN
 bool fixedApPass=false;
@@ -155,8 +155,8 @@ SemaphoreHandle_t mainLock;
 GwRequestQueue mainQueue(&logger,20);
 GwWebServer webserver(&logger,&mainQueue,80);
 
-GwCounter<unsigned long> countNMEA2KIn("count2Kin");
-GwCounter<unsigned long> countNMEA2KOut("count2Kout");
+GwCounter<unsigned long> countNMEA2KIn("countNMEA2000in");
+GwCounter<unsigned long> countNMEA2KOut("countNMEA2000out");
 GwIntervalRunner timers;
 
 bool checkPass(String hash){
@@ -399,6 +399,7 @@ protected:
     }
     status["n2kstate"]=NMEA2000.stateStr(driverState);
     status["n2knode"]=NodeAddress;
+    status["minUser"]=MIN_USER_TASK;
     //nmea0183Converter->toJson(status);
     countNMEA2KIn.toJson(status);
     countNMEA2KOut.toJson(status);
@@ -427,17 +428,13 @@ class CapabilitiesRequest : public GwRequestMessage{
   protected:
     virtual void processRequest(){
       int numCapabilities=userCodeHandler.getCapabilities()->size();
-      GwJsonDocument json(JSON_OBJECT_SIZE(numCapabilities*3+6));
+      GwJsonDocument json(JSON_OBJECT_SIZE(numCapabilities*3+8));
       for (auto it=userCodeHandler.getCapabilities()->begin();
         it != userCodeHandler.getCapabilities()->end();it++){
           json[it->first]=it->second;
         }
-      #ifdef GWSERIAL_MODE
-      String serial(F(GWSERIAL_MODE));
-      #else
-      String serial(F("NONE"));
-      #endif
-      json["serialmode"]=serial;
+      json["serialmode"]=channels.getMode(SERIAL1_CHANNEL_ID);
+      json["serial2mode"]=channels.getMode(SERIAL2_CHANNEL_ID);
       #ifdef GWBUTTON_PIN
       json["hardwareReset"]="true";
       #endif
diff --git a/web/config.json b/web/config.json
index cee92ae..78e3196 100644
--- a/web/config.json
+++ b/web/config.json
@@ -392,6 +392,128 @@
             ]
         },
         "category": "serial port"
+    }
+    ,
+    {
+        "name": "serial2Dir",
+        "label": "serial2 direction",
+        "type": "list",
+        "default": "receive",
+        "list": [
+            "send",
+            "receive",
+            "off"
+        ],
+        "description": "use the serial2 port to send or receive data",
+        "capabilities": {
+            "serial2mode": [
+                "UNI"
+            ]
+        },
+        "category": "serial2 port"
+    },
+    {
+        "name": "serial2Baud",
+        "label": "serial2 baud rate",
+        "type": "list",
+        "default": "115200",
+        "description": "baud rate for the serial port 2",
+        "list": [
+            1200,
+            2400,
+            4800,
+            9600,
+            14400,
+            19200,
+            28800,
+            38400,
+            57600,
+            115200,
+            230400,
+            460800
+        ],
+        "capabilities": {
+            "serial2mode": [
+                "RX",
+                "TX",
+                "UNI",
+                "BI"
+            ]
+        },
+        "category": "serial2 port"
+    },
+    {
+        "name": "sendSerial2",
+        "label": "NMEA to Serial2",
+        "type": "boolean",
+        "default": "true",
+        "description": "send out NMEA data on the serial port 2",
+        "capabilities": {
+            "serial2mode": [
+                "TX",
+                "BI"
+            ]
+        },
+        "category": "serial2 port"
+    },
+    {
+        "name": "receiveSerial2",
+        "label": "NMEA from Serial2",
+        "type": "boolean",
+        "default": "true",
+        "description": "receive NMEA data on the serial port 2",
+        "capabilities": {
+            "serial2mode": [
+                "RX",
+                "BI"
+            ]
+        },
+        "category": "serial2 port"
+    },
+    {
+        "name": "serial2ToN2k",
+        "label": "serial2 to NMEA2000",
+        "type": "boolean",
+        "default": "true",
+        "description": "convert NMEA0183 from the serial port 2 to NMEA2000",
+        "capabilities": {
+            "serial2mode": [
+                "RX",
+                "BI",
+                "UNI"
+            ]
+        },
+        "category": "serial2 port"
+    },
+    {
+        "name": "serial2ReadF",
+        "label": "serial2 read Filter",
+        "type": "filter",
+        "default": "",
+        "description": "filter for NMEA0183 data when reading from serial2\nselect aison|aisoff, set a whitelist or a blacklist with NMEA sentences like RMC,RMB",
+        "capabilities": {
+            "serial2mode": [
+                "RX",
+                "BI",
+                "UNI"
+            ]
+        },
+        "category": "serial2 port"
+    },
+    {
+        "name": "serial2WriteF",
+        "label": "serial2 write Filter",
+        "type": "filter",
+        "default": "",
+        "description": "filter for NMEA0183 data when writing to serial2\nselect aison|aisoff, set a whitelist or a blacklist with NMEA sentences like RMC,RMB",
+        "capabilities": {
+            "serial2mode": [
+                "TX",
+                "BI",
+                "UNI"
+            ]
+        },
+        "category": "serial2 port"
     },
     {
         "name": "serverPort",
diff --git a/web/index.js b/web/index.js
index 28ea82f..10eae20 100644
--- a/web/index.js
+++ b/web/index.js
@@ -3,6 +3,8 @@ let lastUpdate = (new Date()).getTime();
 let reloadConfig = false;
 let needAdminPass=true;
 let lastSalt="";
+let channelList={};
+let minUser=200;
 function addEl(type, clazz, parent, text) {
     let el = document.createElement(type);
     if (clazz) {
@@ -65,22 +67,39 @@ function update() {
     }
     getJson('/api/status')
         .then(function (jsonData) {
+            let statusPage=document.getElementById('statusPageContent');
+            let even=true; //first counter
             for (let k in jsonData) {
                 if (k == "salt"){
                     lastSalt=jsonData[k];
+                    continue;
                 }
+                if (k == "minUser"){
+                    minUser=parseInt(jsonData[k]);
+                    continue;
+                }
+                if (! statusPage) continue;
                 if (typeof (jsonData[k]) === 'object') {
-                    for (let sk in jsonData[k]) {
-                        let key = k + "." + sk;
-                        if (typeof (jsonData[k][sk]) === 'object') {
-                            //msg details
-                            updateMsgDetails(key, jsonData[k][sk]);
-                        }
-                        else {
-                            let el = document.getElementById(key);
-                            if (el) el.textContent = jsonData[k][sk];
+                    if (k.indexOf('count') == 0) {
+                        createCounterDisplay(statusPage, k.replace("count", "").replace(/in$/," in").replace(/out$/," out"), k, even);
+                        even = !even;
+                        for (let sk in jsonData[k]) {
+                            let key = k + "." + sk;
+                            if (typeof (jsonData[k][sk]) === 'object') {
+                                //msg details
+                                updateMsgDetails(key, jsonData[k][sk]);
+                            }
+                            else {
+                                let el = document.getElementById(key);
+                                if (el) el.textContent = jsonData[k][sk];
+                            }
                         }
                     }
+                    if (k.indexOf("ch")==0){
+                        //channel def
+                        let name=k.substring(2);
+                        channelList[name]=jsonData[k];
+                    }
                 }
                 else {
                     let el = document.getElementById(k);
@@ -286,9 +305,13 @@ function factoryReset() {
         .catch(function (e) { });
 }
 function createCounterDisplay(parent,label,key,isEven){
+    if (parent.querySelector("#"+key)){
+        return;
+    }
     let clazz="row icon-row counter-row";
     if (isEven) clazz+=" even";
     let row=addEl('div',clazz,parent);
+    row.setAttribute("id",key);
     let icon=addEl('span','icon icon-more',row);
     addEl('span','label',row,label);
     let value=addEl('span','value',row,'---');
@@ -331,18 +354,7 @@ function updateMsgDetails(key, details) {
         },frame);
     });
 }
-let counters={
-    count2Kin: 'NMEA2000 in',
-    count2Kout: 'NMEA2000 out',
-    countTCPin: 'TCPserver in',
-    countTCPout: 'TCPserver out',
-    countTCPClientin: 'TCPclient in',
-    countTCPClientout: 'TCPclient out',
-    countUSBin: 'USB in',
-    countUSBout: 'USB out',
-    countSERin: 'Serial in',
-    countSERout: 'Serial out'
-}
+
 function showOverlay(text, isHtml) {
     let el = document.getElementById('overlayContent');
     if (isHtml) {
@@ -1448,13 +1460,13 @@ function createDashboard() {
     frame.innerHTML = '';
 }
 function sourceName(v){
-    if (v == 0) return "N2K";
-    if (v == 1) return "USB";
-    if (v == 2) return "SER";
-    if (v == 3) return "TCPcl"
-    if (v >= 4 && v <= 20) return "TCPser";
-    if (v >= 200) return "USER";
-    return "---";
+    for (let n in channelList){
+        if (v >= channelList[n].id && v <= channelList[n].max){
+            return n;
+        }
+    }
+    if (v < minUser) return "---";
+    return "USER["+v+"]";
 }
 let lastSelectList=[];
 function updateDashboard(data) {
@@ -1716,13 +1728,13 @@ window.addEventListener('load', function () {
         }
     }catch(e){}
     let statusPage=document.getElementById('statusPageContent');
-    if (statusPage){
+    /*if (statusPage){
         let even=true;
         for (let c in counters){
             createCounterDisplay(statusPage,counters[c],c,even);
             even=!even;
         }
-    }
+    }*/
     forEl('#uploadFile',function(el){
         el.addEventListener('change',function(ev){
             if (ev.target.files.length < 1) return;