Lenze i550 Series - Modbus RTU

Modbus RTU
Modbus is an internaonally approved, asynchronous, serial communicaon protocol,
designed for commercial and industrial automaon applicaons.
General informaon
Design Oponal
Integrated in standard I/O
DC supply of the control electronics
and oponal eldbus
internally via the inverter Mains-dependent
oponally:
External supply
Mains-independent
24 V DC
at X3/24E...GND
Bus-related informaon
Name Modbus RTU
Communicaon medium RS485 (EIA)
Use Connecon of the inverter to a Modbus
network
Connecon system pluggable double spring terminal
Status display 2 LEDs
Connecon designaon X216: TA, TB, COM
Technical data
Communicaon prole Modbus RTU
Bus terminang resistor Ω 120 Terminated on both sides
integrated bus terminang resistor Yes Acvaon via DIP switch
Network topology
Without repeater Line
Staon
Type Slave
Max. number without repeater 32 per bus segment, incl. host system
Max. number with repeater 90
Address 1 ... 247 Adjustable via code or DIP switch
Baud rate kbps 4.8 … 115 Adjustable via code or DIP switch, alterna-
vely automac detecon via DIP switch
can be acvated
Max. cable length m 12 ... 600 Per bus segment, depending on the baud
rate and the used cable type
Max. cable length between two nodes not limited, the max. bus length is deci-
sive
Data channel
SDO channels Max. 2 servers, with 1 … 8 bytes Supported funcons:
Read Holding Registers
Preset Single Register
Preset Mulple Registers
Read/Write 4 x registers
Communicaon me
Communicaon me depends on Processing me in the inverter Time between the start of a request and
arrival of the response
Telegram runme (baud rate, telegram
length)
Nesng depth of the network
Bus load
Processing me of process data
Update cycle, mulple of ms 10 In the inverter
Processing me ms 0 ... 1
applicaon task runme of the technology appli-
caon used (tolerance)
ms 1 ... x
Product extensions
Networks
Modbus RTU
224