Modbus Rtu - Lenze i550-C0.25/120-1 Project Planning Manual

Modbus RTU

Modbus is an internationally approved, asynchronous, serial communication protocol,
designed for commercial and industrial automation applications.
General information
Design
DC supply of the control electronics
and optional fieldbus
Bus-related information
Name
Communication medium
Use
Connection system
Status display
Connection designation
Technical data
Communication profile
Bus terminating resistor
Integrated bus terminating resistor
Network topology
Without repeater
Station
Type
Max. number without repeater
Max. number with repeater
Address
Transfer rate
Max. cable length
Max. cable length between two nodes
Data channel
SDO channels
Communication time
Communication time depends on
Processing time of process data
Update cycle
Processing time
Application task runtime of the technology
application used (tolerance)
Optional
Integrated in standard I/O
Internally via the inverter
Optionally:
External supply
Modbus RTU
RS485 (EIA)
Connection of the inverter to a Modbus
network
pluggable double spring terminal
2 LEDs
X216: TA, TB, COM
Modbus RTU
Ω 120
Yes
Line
Slave
32
90
1 ... 247
kbps 4.8 ... 115
m 12 ... 600
not limited, the max. bus length is
decisive
Max. 2 servers, with 1 ... 8 bytes
Processing time in the inverter
Telegram runtime (baud rate, telegram
length)
Nesting depth of the network
Bus load
ms 1
ms 0 ... 1
ms 1 ... x
Product extensions
Networks
Modbus RTU
Mains-dependent
Mains-independent
24 V DC
at X3/24E...GND
Terminated on both sides
Activation via DIP switch
Per bus segment, incl. host system
Adjustable via code or DIP switch
Adjustable via code or DIP switch,
alternatively automatic detection via DIP
switch can be activated
Per bus segment, depending on the
transfer rate and the cable type used
Supported functions:
Read Holding Registers
Preset Single Register
Preset Multiple Registers
Read/Write 4 x registers
Time between the start of a request and
arrival of the response
In the inverter
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