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Interface adds ModBUS-TCP to programmable DC power supplies

The option is available on all models in the range, from the 1U high half rack GH1.5kW to the 3U high full rack GSP15kW.  

The ModBUS-TCP protocol is used for the transmission of information between electronic devices for the supervision and control of automation equipment. This option allows users to remotely program, measure and check status of the power supply by sending information using a TCP/IP protocol over a ModBUS‑TCP network, explains the company. The protocol increases the number of available user operating modes to six, including LAN, RS-232/RS-485, USB, remote isolated analogue and front panel (local) interfaces. When being controlled by the remote isolated analogue or front panel, the ModBUS‑TCP interface can be used to monitor the power supply’s functionality.

The software package includes software drivers, a waveform creator and a virtual front panel GUI. The GUI interface can be used to view the IP and MAC address, set up an IP address, perform a ModBUS‑TCP reset and view the REM indicator to identify remote operation.

The rear mounted two-port ModBUS‑TCP interface has two shielded Ethernet RJ‑45 connectors allowing multiple ModBUS‑TCP power supplies to be connected directly with their own IP address. Up to 31 supplies can be connected via a simple link cable via the RS‑485 multi‑drop feature and one shared ModBUS‑TCP IP address.

The ModBUS‑TCP interface can communicate over any standard TCP/IP network, including LAN and WAN, with PING server also supported. A webpage provides the capability to read and configure the Ethernet configuration parameters, view ModBUS‑TCP statistics and verify communication. Full remote program/monitor functions are available, compatible with ModBUS‑TCP test and measurement utilities using the ModBUS‑TCP command language. Programming using TCP sockets, which support PLCs, Linux and other non-VISA controllers, is supported with multiple and simultaneous socket (up to four) connections allowed by port 502.



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