Operation; Requirements For Successful Operation; Device Classification; Ensuring Safe And Successful Control - Danfoss VLT Soft Starter MCD 600 Installation Manual

Modbus TCP Card
Installation Guide

6 Operation

6.1 Requirements for Successful Operation

The Modbus TCP Card must be controlled by a Modbus client (such as a PLC), which complies with the Modbus Protocol Specifica-
tion. For successful operation, the client must also support all functions and interfaces described in this manual.
The available features and parameter details may vary according to the model and software version of the soft starter. Refer to
the VLT® Soft Starter MCD 600 Operating Guide for details of parameters and supported features.

6.2 Device Classification

The Modbus TCP Card is a Modbus server and must be managed by a Modbus client over Ethernet.

6.3 Ensuring Safe and Successful Control

Data written to the device remains in its registers until the data is overwritten or the device is reinitialized. If the soft starter is con-
trolled via parameter 7-1 Command Override or is disabled via the reset input (terminals RESET, COM+), fieldbus commands should
be cleared from the registers. If a command is not cleared, it is re-sent to the soft starter once fieldbus control resumes.

6.4 Feedback LEDs

Port 1 Port 2
Table 2: LED Descriptions
LED name LED state
Error Off
Flashing
On
Status Off
Slow flash
Fast flash
Link x Off
On
TX/RX x Flashing
Off
16 | Danfoss A/S © 2020.12
N O T I C E
TX/RX2 TX/RX1 STATUS
LINK 2 LINK 1 ERROR
Description
No error.
System error.
Communication error.
The device is not powered up.
The device is ready but not configured.
Communication has been established.
No network connection.
Connected to a network.
Transmitting or receiving data.
No network connection.
Keypad
Operation
AN353424224484en-000101 / 130R0946