TECO F510 series - Modbus Protocol Descriptions

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4.6 Modbus Protocol Descriptions
4.6.1 Communication Connection and Data Frame
The inverter can communicate with a PC or PLC via RS485 or RS232 using the Modbus RTU or
Modbus ACSII protocol. The maximum frame length is 80 bytes.
 Network Connection
Controller
(PLC / HMI or
PC )
F510
Node
Address 01
F510
Node
Address 02
F510
Node
Address 03
F510
Node
Address 1F
CN6 CN6 CN6 CN6
RS-485
Interface
S(+) S(-) S(+) S(-) S(+) S(-) S(+) S(-)
Receiver
Sender
**When several inverters are connected togerher by Modbus, please turn on the terminal resistor
switch on the end inverter.
**The distance of communication line with above 200m should have terminal resistors, which ought
to be placed at both ends, so as to eliminate reflection phenomenon.
Inverter Model Terminal resistor switch
220V 1HP~50HP
SW5
440V 1HP~75HP
220V 60HP~175HP
SW4 (Standard H & C)
SW5 (Enhanced E & G)
440V 100HP~800HP
 Use
S (+) and S (-) terminals (only for RS-485) or CN6 connector to connect.
 CN6 Connector:
Pin Signal Pin Signal
1 RS-485 S+ signal 5 Tx signal
2 RS-485 S- signal 6 RS-485 S- signal
3 RS-485 S+ signal 7
VCC of isolated 5V
power supply
4 Rx signal 8
GND of isolated 5V
power supply
 For RS-485 communication, use pin 1 or pin 3 for S (+) and pin 2 or pin 6 for S (-).
87654321
120Ω
1/4w
120Ω
1/4w