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6 STARTUP GUIDE
The main steps to start up the CFW320 frequency inverter in Modbus TCP network are described below. These
steps represent an example of use. Check out the specific chapters for details on the indicated steps.
6.1 INSTALLING THE ACCESSORY
1. Install the communication accessory, as indicated in the installation guide supplied with the accessory.
2. Observe the content of parameter P028. See if the module is recognized. Detection is done automatically
and requires no user intervention.
3. Connect the cables, considering the recommended instructions in network installation, as described in
Section 3 on page
Use shielded cable.
Properly ground network equipment.
Avoid laying communication cables next to power cables.
6.2 CONFIGURING THE EQUIPMENT
1. Follow the recommendations described in the user manual to program the device parameters related to the
motor parameterization, desired functions for the I/O signals, etc.
2. Program the command sources as desired for the application in parameters (P220 ... P228).
3. Configure communication parameters, such as address, baudrate, parity, etc. in parameters (P308 ... P312).
4. Configure the timeout for the Modbus RTU communication in parameter P314.
5. Program the desired action for the equipment in case of communication fault in parameter P313.
6.3 CONFIGURING THE MASTER
The way the network configuration is done depends greatly on the used master and the configuration tool. It is
essential to know the tools used to perform this activity. In general, the following steps are necessary to perform
the network configuration.
1. Configure the master to access the holding registers, based on the defined equipment parameters to read
and write. The register address is based on the parameter's network address (Net Id), as shown in the
programming manual.
2. It is recommended that reading and writing are done in a cyclic manner, allowing detection of communication
errors by timeout. The period of data update must be in accordance with the value programmed in parameter
P314.
6.4 COMMUNICATION STATUS
Once the network is assembled and the master programmed, it is possible to use the parameters of the equipment
to identify some status related to the communication.
Parameter P316 indicates the slave communication status.
The master of the network must also supply information about the communication with the slave.
10:
STARTUP GUIDE
CFW320 | 22
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