TECO-Westinghouse F510 Series, Instruction Manual

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Modbus communication can perform the following operations, independent of the frequency command
selection (00-05) setting and operation command selection (00-02) setting:

Monitor inverter signals

Read and write parameters.

Reset fault

Control multi-function inputs
Modbus (RS-485) communication specification:
Items Specification
Interface RS-485
Communication type Asynchronous (start - stop synchronization)
Communication parameters
Baud rate: 1200, 2400, 4800, 9600, 19200 and 38400 bps
Data Length: 8 bits (Fixed)
Parity: options of none, even and odd bit.
For even and odd selection stop bit is fixed at 1 bit.
Communication protocol Modbus RTU / ASCII
Number of inverters Maximum 31 units
Communication wiring and setup
(1) Turn off power to the inverter.
(2) Connect communication lines of the controller to the inverter (RJ45).
(3) Turn power on.
(4) Set the required communication parameters via the keypad.
(5) Press DSP/FUN key to go back to the main menu.
(6) If it is over the automatic return time (11-13) and DSP/FUN key is not pressed, reset the parameter
and press DSP/FUN key to go back to the main menu. Or reconnect the inverter.
(7) Start communication between controller and inverter.
Modbus (485) communication architecture
(1) Modbus communication configuration uses a master controller (PC, PLC), communicating to a
maximum of 31 inverters.
(2) The master controller is directly connected to the inverter via the RS-485 interface. If the master
controller has a RS-232, a converter must be installed to convert signals to RS-485 to connect the master
controller to the inverter.
(3) A maximum 31 inverters can be connected to a network, following the Modbus communication
standard.
Communication Parameters:
09-00:
Inverter station addresses: Range 1-31
09-02: RS-485 communication baud rate setting
= 0: 1200 bps (bits / second)
= 1: 2400 bps
= 2: 4800 bps
= 3: 9600 bps
= 4: 19200 bps
= 5: 38400 bps
09-03: Stop bit selection
= 0: 1 stop bit
= 1: 2 stop bits
09-04: Parity selection of RS-485 communication
= 0: No parity.
= 1: even parity.
= 2: odd parity.