A Sierra Monitor Company Driver Manual (Supplement to the FieldServer Instruction Manual) FS-8700-15 Modbus Daniels APPLICABILITY & EFFECTIVITY Effective for all systems manufactured after May 1, 2001
FS-8700-15 Modbus Daniels Manual Index TABLE OF CONTENTS 1. Modbus Daniels Description............................................................................................1 2. Driver Scope of Supply.....................................................................................................1 2.1. Supplied by FieldServer Technologies for this driver ...................................................1 2.2. Provided by the Supplier of 3rd Party Equipment ...................................
FS-8700-15 Modbus Daniels Manual 1. Page 1 of 7 Modbus Daniels Description The Modbus Daniels driver allows the FieldServer to transfer data to and from devices over either RS-232 or RS-485 using Modbus Daniels protocol. The FieldServer can only emulate a Client. Modbus Daniels is an inclusion into Modbus ASCII, allowing floats to be used. Modbus Daniels is designed to support floats in the address range 7000 to 7999. The "Double" data type is not supported.
FS-8700-15 Modbus Daniels Manual 3. Page 2 of 7 Hardware Connections The FieldServer is connected to the Modbus Daniels device as shown in the connection drawing. Configure the Modbus Daniels device according to manufacturer’s instructions. 4. Configuring the FieldServer as a Modbus Daniels Client For a detailed discussion on FieldServer configuration, please refer to the FieldServer Configuration Manual.
FS-8700-15 Modbus Daniels Manual Page 3 of 7 factory defaults provided in the configuration files included with the FieldServer (See “.csv” sample files provided with the FS). This section documents and describes the parameters necessary for configuring the FieldServer to communicate with a Modbus Daniels Server. 4.1. Data Arrays/Descriptors The configuration file tells the FieldServer about its interfaces, and the routing of data required.
FS-8700-15 Modbus Daniels Manual Page 4 of 7 Protocol device is connected to the FieldServer Specify protocol used Baud* Specify baud rate Parity* Specify parity Data_Bits* Stop_Bits* Specify data bits Specify stop bits Specify hardware handshaking Time between internal polls Handshaking* Poll _Delay* FS-X20 Serves: Serial Port Modbus_Daniels 110 – 115200, standard baud rates only, 9600 Even, Odd, None, Mark, Space 7, 8 1 RTS, RTS/CTS, None 0-32000 seconds, 1 second Example // Client Side Conne
FS-8700-15 Modbus Daniels Manual 4.4. Page 5 of 7 Client Side Map Descriptors 4.4.1. FieldServer Related Map Descriptor Parameters Section Title Map Descriptors Column Title Map_Descriptor_Name Data_Array_Name Data_Array_Offset Function 4.4.2.
FS-8700-15 Modbus Daniels Manual 4.4.4. Map Descriptor Example. Section Title Map Descriptors Map_Descriptor_Name, CMD_AI, The data array where the read data will be stored is specified here. This data array and its format must be specified under the data arrays section. Page 6 of 7 Data_Array_Name, DA_AI, Data_Array_Offset, 0, Note the use of the RDBC function here which will cause this map descriptor to continuously read data every scan interval from the remote device.
FS-8700-15 Modbus Daniels Manual 5. Page 7 of 7 Advanced Topics None. 6. Driver Notes None. 7. Revision History 10/03/03 Driver Version 1.00d Document Revision 0 10/13/03 1.00d 1 MF 12/09/03 1.00d 2 DR 12/23/03 1.00d 3 JD Date Resp Comment JD Releasing Updating formatting.
