Smart LT Manual
Dynatronix, Inc.
198-0853-02 Rev F
Page 53 of 126
7. Remote Host Control
7.1. Overview
The LT SERIES DC rectifier can be controlled by a host (computer, plc, etc) using the RS485 host
port and the ASCII host protocol defined in
Appendix B:Host Port Protocol.
The host port can be
used to monitor the settings or read back values at any time. The host port can only modify
settings if the unit is in Remote mode (RMT indicator is on). The Remote mode is entered by
pressing the Remote switch.
7.2. Host Port Communications Settings
The host port settings include a Unit ID (1 to 99) and Baud Rate (9600, 19200, 38400, 57600,
115200). If more than one power supply is connected on a multi-drop network each power supply
must have a unique unit ID so that it can be individually addressed.
The host port settings are displayed momentarily at power up after the version information is
displayed. The host port ID is displayed on the voltage display and the baud rate is displayed in
kilobits per second on the current display. The following would be displayed on the meters for a
unit having an ID of 01 and baud rate of 115200.
The host port baud rate and the host unit ID can be set using the host port protocol as defined in
Appendix B:
or they can be changed by using the power supply front panel with the instructions in
6.3.Unit Configuration
and
6.3.2.Host Port Configuration
.
7.3. Host Port Connections
See the
5.5.Serial Host Port Connections
for the host port connection diagram.
7.4. Host Port Protocol
An ASCII based protocol provides access to all power supply settings for complete power supply
control through the host port connection. Multiple power supplies on a multi-drop RS485 network
can be individually addressed. See
Appendix B:Host Port Protocol
for details.
.
.