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Introduction
1.1 About communication protocols
This device has Modbus protocols.
The Modbus protocols are communication protocols developed by Modicon Inc. (AEG Schneider
Automation International S.A.S) for PLC, which are described in the document of protocol
specifications (PI-MBUS-300 Rev.J). For the Modbus protocol specifications, see the document.
This document contains the Modbus protocols' function codes and data content, which can be
mainly used for this device.
1.2 Outline of Ethernet communication functions
Via the Ethernet communication, the following functions are available.
(1) FTP server
Use of the attached data viewer software allows the recorded data saved in the SD card attached
to the recorder to be loaded.
(2) Web server
The recorder's measurement values, the status of the warning occurrences, recording start/stop
status and other statuses can be easily checked on the computer browser. (Use the Internet
Explorer as the browser.)
(3) Modbus TCP function
By communicating with devices such as PCs, PLCs, etc., the measurement values and other data
can be sent and received.
(4) SNTP client
Through the network, the time data is received from the SNTP server on a regular basis to correct
the recorder's time.
1.3 RS-485 (option)
The communication through RS-485 (option) is available. The protocol is Modbus RTU.
1.4 Preparation
Press the MENU button on the main recorder unit and touch System key > Comm. key to
display the settings menu for communications. Following the operation manual of the main recorder
unit, complete the settings.
(For details about the
PAPERLESS RECORDER OPERATION MANUAL(WXPVM70mnAR001E)
, see section
8.7.)
