Short Setup - Lenze i55AE125B Manual

Configuring the network
Modbus TCP

Short setup

9.8.8 Short setup
In the following, the steps required for controlling the inverter via Modbus are described.
Parameterisation required
1. Activate network control:
2. Set network as standard setpoint source:
3. Set IP address of the inverter (slave), see section Data mapping.
4. Save parameter settings:
5. In order that the changed communication settings become effective, there is the option to
switch the inverter off and on again or
•
restart the communication, see
•
In the default setting, the digital input DI1 is assigned with the "Run" function. If
the network control is activated, this function serves as "start enable" for start
commands via network. Hence, the digital input DI1 must be set to HIGH level in
order that the motor can be started via network.
Starting/stopping the drive via Modbus
For starting/stopping the drive, Modbus register 42101 can be used.
Modbus register 42101 is permanently assigned to the AC Drive control word
•
(P592.01).
In the frame, the leading 4 is omitted in the addressing process. The numbering of the reg-
•
isters starts with 1; addressing, however starts with 0. Therefore the address 2100
(0x0834) is used in the frame when register 42101 is written.
Bits set in the AC drive control word:
Bit 0 ≡ Run forward (CW)
•
Bit 5 ≡ Activate network control
•
Bit 6 ≡ Activate network setpoint
•
Function code 6, i. e. writing into a single register.
•
Example of an inverter with the node address 1:
Request frame by the master
Slave address Function code
0x01 0x06
If digital input DI1 ("Start enable") is set to HIGH level, the drive should start and the inverter
should respond with the same frame as confirmation:
Response message from the inverter
Slave address Function code
0x01 0x06
Write the speed of the drive via Modbus
The drive speed can be changed via the Modbus register 42102, see
Example of an inverter with the node address 1:
Request frame by the master
Slave address Function code
0x01 0x06
Response message from the inverter
Slave address Function code
0x01 0x06
The drive now rotates with a frequency of 12.34 Hz.
362
0x2631:037 (P400.37) = "TRUE [1]"
0x2860:001 (P201.01)
0x2022:003 (P700.03) = "on / start [1]".
0x23B0 (P508.00).
Register address
0x08 0x34
Register address
0x08 0x34
Register address
0x08 0x35
Register address
0x08 0x35
= "Network [5]"
^ 360
4Start / stop motor
^ 531
0x400B:001
AC Drive control word
Data: 0b1100001 ≡ 0x0061
0x00 0x61
AC Drive control word
Data: 0b1100001 ≡ 0x0061
0x00 0x61
Data mapping.
Data
Network setpoint frequency (0.01)
0x04 0xD2
Data
Network setpoint frequency (0.01)
0x04 0xD2
Checksum (CRC)
0x0B 0x8C
Checksum (CRC)
0x0B 0x8C
Checksum (CRC)
0x19 0x39
Checksum (CRC)
0x19 0x39