1 SDC-30 Modbus Slave Integration Guide

Transcription

1 1 SDC-30 Modbus Slave Integration Guide Introduction Every SDC 30 comes with a feature called Modbus Master. The EasyIO 30P can be a modbus master and slave devices can be connected to the RS 485 port on board. This feature only applicable for Modbus Async devices. BACnet MS/TP devices is not supported for with this feature. This feature enable users to hooked up directly to a SST Thermostats, FLTA wireless devices, HLS Room Controllers, Variable Speed Drive (VSD), Digital Power Meters (DPM) and other modbus Async devices. However there is a limitation to max devices per SDC 30. Each SDC 30 is recommended up to 8 nos MAX of slave devices. Hardware configurations Image below shows the hardware configurations for the Modbus Master and Slave feature. Integration between SDC 30 and NCU is either SOX protocol, Tcom, Bacnet IP or Modbus TCP. PAGE 1 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

2 Below is the wrong perception of customers. SDC 30 cannot do BACnet MS/TP to BACnet IP. SDC 30 cannot convert MS/TP devices points to become BACnet IP points. It is not a BACnet Gateway. SDC-30 ModbusSlave kit Components (easyiomodbusslave) This kit contains 10 objects. All the objects are to be used for Modbus Master Slave configuration only. Modbus Master and Slave configuration is a unique configuration where, the SDC 30 Sedona controller as a Modbus Master Controller and Modbus Slave controller connecting to the Rs 485 com port. To use these objects just drag and drop into the wire sheet. PAGE 2 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

3 ModbusSlaveAsyncNetwork ModbusSlaveAsyncNetwork uses the SDC 30 built in Modbus RTU master driver to connect to Modbus Slave devices. The serial port has to be disabled first before changing parameter. Do not attempt to change the parameters via web browser. The serial port setting will automatically changed from Modbus to Modbus Master whenever you change the parameter in this object. **Note: ModbusSlaveAsyncNetwork can be in a new folder or in default SDC 30 folder Example below show the ModbusSlaveAsyncNetwork is in a new folder created with the name Slave ModbusSlaveAsyncNetwork is under a new folder named Slave. The property sheet of the object is shown below PAGE 3 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

4 Status Network status. Readonly >0 = OK 0 = Not connected. 1 = port not available 2 = invalid baudrate 3 = invalid databit 4 = invalid stopbit 5 = invalid parity Normally the value should be 1 Port Serial port, COM1 = 1, COM2 = 2 and etc By default the Com port is = 1 Baudrate Serial port baudrate, Default baud rate set is at 19.2K EasyIO30P default baud rate is at 19.2K Databit Serial port data bit, 7 or 8 Stopbit Serial port stop bit, 1 or 2 Parity PAGE 4 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

5 Serial port parity. 0 = None 1 = Odd 2 = Even Turn Around Turnaround is the time delay in milliseconds between a message can be sent out by driver after it receive the last message. Time Out Modbus Slave device time out in milliseconds. Enable Enable Serial port Write On Up Perform a write whenever the COM/Device is up. Write On Start Perform a write whenever the COM/Device is up ModbusSlaveDevice ModbusSlaveDevice must be child of Modbus Slave Network.It cannot be anywhere else. **Note: ModbusSlaveDevice can only be a child of ModbusSlaveNetwork Example below show the ModbusSlaveDevice is in a child oof the network. PAGE 5 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

6 ModbusSlaveDevicek is a child of ModbusSlaveNetwork. The property sheet of the object is shown below Fault Fault status. Readonly False = No fault True = Fault Status Current status. Readonly Alive = Slave Device Alive Down = Slave Device Down Enable Enable device. Address PAGE 6 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

7 Device Address in decimal Long Byte Order3210 Long type data (32 bit) byte order. True = 3210F False = 1032 Float Byte Order3210 Floating point type data byte order True = 3210 False = 1032 Use Preset Multiple Register True = support Modbus function 16 Use Force Multiple Coil True = support Modbus function 15 Action Version offers device ping. Right mouse button at the device to do a force ping ModbusPointCoil ModbusPointCoil is Modbus Coil Output Point **Note: ModbusPointCoil can only be a child of ModbusSlaveDevice The property sheet of the object is shown below PAGE 7 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

8 Fault Status of the Modbus register. false = Valid true =Invalid Status Status of the point OK = Online Down = Offline Address Modbus register address. Note that only Decimal format is supported. If the Modbus device register is in HEX, need to convert to DEC. Out Current Coil Output state. Readonly In Local input value. ModbusSlaveDevice register example. PAGE 8 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

9 ModbusPointDiscrete ModbusPointDiscrete is Modbus Discrete Input point **Note: ModbusPointDiscrete can only be a child of ModbusSlaveDevice The property sheet of the object is shown below Fault Status of the Modbus register. false = Valid true =Invalid Status Status of the point OK = Online Down = Offline Address Modbus register address. Note that only Decimal format is supported. If the Modbus device register is in HEX, need to convert to DEC. Out Current Coil Output state. Readonly PAGE 9 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

10 ModbusSlaveDevice register example ModbusPointHoldingFloat ModbusPointHoldingFloat is Modbus Holding Float point **Note: ModbusPointHoldingFloat can only be a child of ModbusSlaveDevice The property sheet of the object is shown below Fault Status of the Modbus register. false = Valid true =Invalid Status Status of the point OK = Online Down = Offline Address Modbus register address. Note that only Decimal format is supported. PAGE 10 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

11 If the Modbus device register is in HEX, need to convert to DEC. Out Current Coil Output state. Readonly In Local input value. ModbusSlaveDevice register example. PAGE 11 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

12 ModbusPointHoldingLong ModbusPointHoldingLong is Modbus Holding Long point **Note: ModbusPointHoldingLong can only be a child of ModbusSlaveDevice The property sheet of the object is shown below Fault Status of the Modbus register. false = Valid true =Invalid Status Status of the point OK = Online Down = Offline Address Modbus register address. Note that only Decimal format is supported. If the Modbus device register is in HEX, need to convert to DEC. Out Current Coil Output state. Readonly In Local input value. PAGE 12 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

13 ModbusSlaveDevice register example ModbusPointHoldingWord ModbusPointHoldingWord is Modbus Holding Word point **Note: ModbusPointHoldingWord can only be a child of ModbusSlaveDevice The property sheet of the object is shown below Fault Status of the Modbus register. false = Valid true =Invalid Status Status of the point OK = Online Down = Offline Address Modbus register address. Note that only Decimal format is supported. If the Modbus device register is in HEX, need to convert to DEC. PAGE 13 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

14 Out Current Coil Output state. Readonly In Local input value. ModbusSlaveDevice register example ModbusPointInputLong ModbusPointInputLong is Modbus Input Long point **Note: ModbusPointInputLong can only be a child of ModbusSlaveDevice The property sheet of the object is shown below Fault Status of the Modbus register. false = Valid true =Invalid Status Status of the point OK = Online PAGE 14 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

15 Down = Offline Address Modbus register address. Note that only Decimal format is supported. If the Modbus device register is in HEX, need to convert to DEC. Out Current Coil Output state. Readonly ModbusSlaveDevice register example PAGE 15 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

16 ModbusPointInputWord ModbusPointInputWord is Modbus Input Word point **Note: ModbusPointInputWord can only be a child of ModbusSlaveDevice The property sheet of the object is shown below Fault Status of the Modbus register. false = Valid true =Invalid Status Status of the point OK = Online Down = Offline Address Modbus register address. Note that only Decimal format is supported. If the Modbus device register is in HEX, need to convert to DEC. Out Current Coil Output state. Readonly ModbusSlaveDevice register example PAGE 16 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

17 2 Configuring the Modbus Slave Network Step 1 Connect to the controller with Sedona Workbench. IP address : Username : admin Password : <no password> Manage kits to install easyiomodbusslave into your controller Step 2: PAGE 17 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

18 Choose easyiomodbusslave from Sedona Palette Drag & drop the ModbusSlaveNetwork into your App. The object can be anywhere in the EasyIO folder. The object can be placed in a new folder as well. In this case, the object is drop into a new folder named Modbus. The object cannot be drop into the service folder Step 3: Double click the object to get into the property sheet. You will need to configure the serial configurations according to the slave device. Enable the network. Any changes made, user need to disable and re enable the network again. PAGE 18 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

19 Step 4: Drop the ModbusSlaveDevice object under the Network object. Slave device must be a child of the Network object. Renaming the object is possible. Open the property sheet of the device and configure the serial address for the device. For this example the device address = 110. Step 5: Now user can drop the modbus register point under the device, modbus register has to be a child of the device. Referring to the Modbus Register document of the Modbus Slave device that is connecting to the EasyIO 30P, drop the respective point into it. An example that we are using here is the Schneider ION 6200, modbus RTU protocol. Below is the modbus register document. The register that describe in this document is the Frequency, Modbus address = 40115, Register type = Holding register, Data type = Integer16, scale = 100 PAGE 19 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012

20 Point type that should be use from the ModbusSlave kit is ModbusPointHoldingWord. Step 6: Configure the register address. Referring to the document, Frequency register address is modbus = or decimal = 114. The register address may vary depending on manufacturer (zero based or one based). EasyIO sedona will only accept decimal format for the modbus register. The value shown = 4994, multiplier according to the document = 100. In order to get the correct value, 4994 / 100 = 49.94Hz. Step 7: Continue Step 5 and Step 6 for other points PAGE 20 of 20 File Name: SDC-AN008-SDCModbusIntegration.docx Date: 4 Dec 2012