WEG CFW501 V1.8X, Programming Manual, Page: 155 / 192

Communication
CFW501 | 16-1
16
16 COMMUNICATION
In order to exchange information via communication network, the CFW501 features several standardized
communication protocols, such as Modbus, Bacnet and Metasys N2.
For further details referring to the inverter configuration to operate in those protocols, refer to the CFW501
user’s manual for communication with the desired network. Below are listed the parameters related to the
communication.
16.1 SERIAL RS-485 INTERFACE
The CFW501 features has two simultaneous serial interfaces; however, only one of them can be source for
commands or references; the other is mandatorily inactive or remote HMI according to the selection of P0312.
See the control interface CFW500-CRS485 plug-in module, as per the figures below:
Figure 16.1: Plug-In Module CFW500-CRS485
NOTE!
The CFW500-CRS485 plug-in module has Serial (1) interface through RS485 port at terminals
12(A-) and 14(B+), as well as the Serial (2) interface through another RS485 port at terminals
20(A2+) and 22(B2+); see
Figure 16.1: Plug-In Module CFW500-CRS485 on page 16-1 .
Parameters P0308 to P0316 together with P0682 and P0683 characterize the serial interface which is active for
commands and/or reference.
P0308 – Serial Address
P0310 – Serial Baud Rate
P0311 – Serial Interface Byte Configuration
P0312 – Serial Interface Protocol (1)(2)
P0314 – Watchdog Serial
P0316 – Serial Interface Status
Description:
Parameters for the configuration and operation of the serial interface USB, RS-232 and RS-485. For detailed
description, refer to the Modbus RTU user´s manual supplied on the CD-ROM that comes with the product.