electricimp · ppetrosh · May 4, 2017 · Apr 14, 2017 · Apr 14, 2017 · May 3, 2017
diff --git a/Modbus485Master/README.md b/Modbus485Master/README.md
@@ -2,16 +2,15 @@
 
 This library allows an imp to communicate with other devices via the Modbus-RS485 protocol.
 
-**To use this library, add the following statements**
+**To use this library, add the following statements to the top of your device code:**
 
-```#require "CRC16.class.nut:1.0.0"
+```
+#require "CRC16.class.nut:1.0.0"
 #require "ModbusRTU.class.nut:1.0.0"
 #require "ModbusMaster.class.nut:1.0.0"
 #require "Modbus485Master.class.nut:1.0.0"
 ```
 
-**to the top of your device code.**
-
 ## Hardware Setup
 
 The following instructions are applicable to Electric Imp’s [impAccelerator&trade; Fieldbus Gateway](https://electricimp.com/docs/hardware/resources/reference-designs/fieldbusgateway/).
@@ -49,7 +48,7 @@ modbus <- Modbus485Master(hardware.uart2, hardware.pinL);
 
 ## Modbus485Master Class Methods
 
-### read(*deviceAddress, targetType, startingAddress, quantity, values[, callback]*)
+### read(*deviceAddress, targetType, startingAddress, quantity[, callback]*)
 
 Function Code : 01, 02, 03, 04
 
@@ -209,7 +208,7 @@ modbus.diagnostics(0x01, MODBUSRTU_SUB_FUNCTION_CODE.RESTART_COMMUNICATION_OPTIO
 
 Function Code : 17
 
-This method reads the description of the type, the current status and other information specific to a remote device whose address is specified in the method’s first parameter. The second, optional parameter is a function that will be fired when a response regarding this request is received. It takes two parameters, *error* and *result*.  
+This method reads the description of the type, the current status and other information specific to a remote device whose address is specified in the method’s first parameter. The second, optional parameter is a function that will be fired when a response regarding this request is received. It takes two parameters, *error* and *result*.
 
 #### Example
 
@@ -220,7 +219,7 @@ modbus.reportSlaveID(0x01, function(error, result) {
     } else {
         server.log("Run indicator : " + result.runIndicator);
         server.log(result.slaveId);
-    }        
+    }
 }.bindenv(this));
 ```
 
@@ -232,7 +231,7 @@ This method modifies the contents of a specified holding register using a combin
 
 | Parameter | Data Type | Required | Default Value | Description |
 | --- | --- | --- | --- | --- |
-| *deviceAddress* | Integer | Yes | N/A | The unique address that identifies a device |   
+| *deviceAddress* | Integer | Yes | N/A | The unique address that identifies a device |
 | *referenceAddress* | Integer | Yes | N/A | The address of the holding register the value is written into |
 | *AND_mask* | Integer | Yes | N/A | The AND mask |
 | *OR_mask* | Integer | Yes | N/A | The OR mask |
@@ -246,7 +245,7 @@ modbus.maskWriteRegister(0x01, 0x10, 0xFFFF, 0x0000, function(error, result) {
         server.error(error);
     } else {
         server.log(result);
-    }        
+    }
 }.bindenv(this));
 ```
 
@@ -274,7 +273,7 @@ modbus.readWriteMultipleRegisters(0x01, 0x10, 0xFFFF, 0x0000, function(error, re
         server.error(error);
     } else {
         server.log(result);
-    }        
+    }
 }.bindenv(this));
 ```
 

diff --git a/Modbus485Master/example/example.device.nut b/Modbus485Master/example/example.device.nut
@@ -1,5 +1,6 @@
 #require "CRC16.class.nut:1.0.0"
 #require "ModbusRTU.class.nut:1.0.0"
+#require "ModbusMaster.class.nut:1.0.0"
 #require "Modbus485Master.class.nut:1.0.0"
 
 // this example demonstrates how to write and read values into/from holding registers

diff --git a/Modbus485Slave/README.md b/Modbus485Slave/README.md
@@ -2,16 +2,14 @@
 
 This library empowers an imp to communicate with the Modbus Master via the RS485 protocol.
 
-**To use this library, add**
+**To use this library, add the following statements to the top of your device code:**
 
 ```squirrel
 #require "CRC16.class.nut:1.0.0"
 #require "ModbusSlave.class.nut:1.0.0"
 #require "Modbus485Slave.class.nut:1.0.0"
 ```
 
-**to the top of your device code.**
-
 ## Hardware Setup
 
 The following instructions are applicable to Electric Imp’s [impAccelerator&trade; Fieldbus Gateway](https://electricimp.com/docs/hardware/resources/reference-designs/fieldbusgateway/).

diff --git a/ModbusRTU/README.md b/ModbusRTU/README.md
@@ -1,16 +1,14 @@
 # ModbusRTU
 
-This library creates and parses Modbus Protocol Data Units (PDU).
+This library creates and parses Modbus Protocol Data Units (PDU). It depends on Electric Imp's [CRC16 library](https://github.com/electricimp/CRC16) to calculate the [CRC-16](https://en.wikipedia.org/wiki/Cyclic_redundancy_check) value of a string or blob.
 
-**To use this library, add**
+**To use this library, add the following statements to the top of your device code:**
 
 ```
 #require "CRC16.class.nut:1.0.0"
 #require "ModbusRTU.class.nut:1.0.0"
 ```
 
-**to the top of your device code.**
-
 ## ModbusRTU Class Usage
 
 This is the main library class. All methods and variables inside this class are static.

diff --git a/ModbusTCPMaster/README.md b/ModbusTCPMaster/README.md
@@ -2,7 +2,7 @@
 
 This library allows an imp to communicate with other devices via TCP/IP. It requires the use of [Wiznet](https://github.com/electricimp/Wiznet_5500) to transmit the packets between devices via Ethernet.
 
-**To use this library, add**
+**To use this library, add the following statements to the top of your device code:**
 
 ```
 #require "ModbusRTU.class.nut:1.0.0"
@@ -11,8 +11,6 @@ This library allows an imp to communicate with other devices via TCP/IP. It requ
 #require "W5500.device.nut:1.0.0"
 ```
 
-**to the top of your device code.**
-
 The following instructions are applicable to Electric Imp’s [impAccelerator&trade; Fieldbus Gateway](https://electricimp.com/docs/hardware/resources/reference-designs/fieldbusgateway/).
 
 1. Connect the antenna to the Fieldbus Gateway
@@ -53,7 +51,7 @@ This method configures the network and opens a TCP connection with the device. I
 
 | Parameter | Data Type | Required | Default Value | Description |
 | --- | --- | --- | --- | --- |
-| *connectionSettings* | Table | Yes | N/A | The connection settings. It entails the device IP and port |
+| *connectionSettings* | Table | Yes | N/A | The device IP address and port. The device IP address can either be a string or an array of four bytes, for example: `[192, 168, 1, 37]` or `"192.168.1.37"`. The port can either be an integer or array of two bytes (the high and low bytes of an unsigned two-byte integer value), for example: `[0x10, 0x92]` or `4242` |
 | *onConnectCallback* | Function | No | Null | The function to be fired when the connection is established |
 | *onReconnectCallback* | Function | No | Null| The function to be fired when the connection is re-established |
 
@@ -64,8 +62,8 @@ This method configures the network and opens a TCP connection with the device. I
 ```squirrel
 // The device address and port
 local connectionSettings = {
-    "destIP"     : [192, 168, 1, 90],
-    "destPort"   : [0x01, 0xF6]
+    "destIP"     : "192.168.1.90",
+    "destPort"   : 502
 };
 
 // Open the connection
@@ -255,7 +253,7 @@ modbus.reportSlaveID(function(error, result) {
     } else {
         server.log("Run indicator : " + result.runIndicator);
         server.log(result.slaveId);
-    }        
+    }
 }.bindenv(this));
 ```
 
@@ -280,7 +278,7 @@ modbus.maskWriteRegister(0x10, 0xFFFF, 0x0000, function(error, result) {
         server.error(error);
     } else {
         server.log(result);
-    }        
+    }
 }.bindenv(this));
 ```
 
@@ -307,7 +305,7 @@ modbus.readWriteMultipleRegisters(0x10, 0xFFFF, 0x0000, function(error, result)
         server.error(error);
     } else {
         server.log(result);
-    }        
+    }
 }.bindenv(this));
 ```