Vacon 100 Industrial User Manual

Also see for 100 flow: Applications manual Installation instruction Installation manual Installation manual Installation manual

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Vacon 100 Industrial User Manual Manual pdf 32 page image

6vacon • 30 CommunicationsLocal contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/6. COMMUNICATIONSFeatures of the Modbus-Vacon interface:• Direct control of VACON® drive (e.g. Run, Stop, Direction, Speed reference, Fault reset)• Full access to all VACON® parameters• Monitor VACON® status (e.g. Output frequency, Output current, Fault code)6.1 Data addresses in Modbus messagesAll data addresses in Modbus messages are referenced to zero. The first occurrence of a data itemis addressed as item number zero. For example:• The coil known as ‘Coil 1’ in a programmable controller is addressed as ‘Coil 0000’ in thedata address field of a Modbus message.• Coil 127 decimal is addressed as ‘Coil 007E hex’ (126 decimal).• Holding register 40001 is addressed as register 0000 in the data address field of the mes-sage. The function code field already specifies a ‘holding register’ operation. Therefore the‘4XXXX’ reference is implicit.• Holding register 40108 is addressed as register 006B hex (107 decimal).6.2 Supported Modbus FunctionsThe VACON® variables and fault codes as well as the parameters can be read and written fromModbus. The parameter addresses are determined in the application. Every parameter and actualvalue have been given an ID number in the application. The ID numbering of the parameter as wellas the parameter ranges and steps can be found in the application manual in question. Theparameter value must be given without decimals. If several parameters/actual values are read withone message, the addresses of the parameters/actual values must be consecutive.The address ranges of the different function codes are in many cases not relevant to the user andcan be ignored. The targeted information type (coil, register etc.) can be selected separate from theaddress.Table 15. Supported functionsFunction(dec)Function(hex) Modbus Function Name TCP/UDP RTU Access type Addressrange (hex)1 1 Read coils x Discrete (1-bit) 00000-0FFFF2 2 Read Discrete Inputs x Discrete (1-bit) 10000-1FFFF3 3 Read Holding Registers x x Register (16bit) 40000-4FFFF4 4 Read Input Registers x x Register (16bit) 30000-3FFFF5 5 Write Single Coils x Discrete (1-bit) 00000-0FFFF6 6 Write Single Register x x Register (16bit) 40000-4FFFF15 F Write Multiple Coils x Discrete (1-bit) 00000-0FFFF16 10 Write Multiple Registers x x Register (16bit) 40000-4FFFF23 17 Read/Write Multiple Registers x x Register (16bit) 40000-4FFFFNOTE! Broadcasting not supported in TCP.Broadcast supported with function code 06 and 16 in RTU and in UDP.