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S1A53844 01/2011 9
Introduction
1
Introduction
Data exchanges give access to all Altivar 212 functions:
• Control (start, stop, reset, setpoint),
• Monitoring (status, current, voltage, thermal state...),
• Diagnostics (alarms),
• Settings,
• Configuration.
The communication port has an RJ45 and an open style connector for the connection to the network. At the
physical layer, it supports 2-wire RS485 and transmission speed at 9600 or 19200 bps.
4 Modbus functions are available:
• 3 (16#03) Read Holding Registers
• 6 (16#06) Write Single Register
• 16 (16#10) Write Multiple Registers
• 43/14 (16#2B/0E) Read Device Identification
Function 3 has a restricted implementation:
• with length 1 it permits to read any parameter of the drive, one by one, see page 33.
• with lengths 1 to 5 it permits to read a particular block of 1 to 5 indirect parameters. These 5 parameters
can be configured through the operation panel to relevant monitoring parameters, see page 34.
Function 16 has a restricted implementation:
• with length 1 it permits to write any writable parameter of the drive, one by one, see page 37.
• with length 1 to 2 it permits to write a particular block of 1 to 2 indirect parameters. These 2 parameters can
be configured through the operation panel to relevant control parameters, see page 38.