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Q: What is the minimum subset of functions that a Modbus slave device should implement?A: It depends on if you are creating a commercially available slave device or your own slave device.If you are cr…

The ModHopper wireless transceiver is a premier, low-cost product for building automation applications developed by the Obvius Corporation that supports Modbus and pulse equipment (i.e. sensors,…

Often the Vendor documentation does not report the byte order in which registers are served, or the order in which words must be combined to form 32 bit numbers. For this reason, FieldServer provides…

How do I close a telnet session/window? This article assumes that you've started a telnet connection through the Windows command prompt (you can do so by typ…

FieldServer offers a 10-serial, 2-Ethernet port, 1 DH+ port protocol translator gateway that enables data transfer between serial, Ethernet and Allen Bradley DH+ protocols. An extensive library of dri…

There are three aspects to the Firmware Version on a FieldServer:Kernel versionDCC versionDriver versionEach driver has its own version number. It is seen on the 'C' screen (Combined Log) or the 'E'…

IntroductionWhat happens if you want to serve some/all of the bits that form a 16 bit register ie. Your client reads a 16bit register but you want to serve those bits as separate binary objects?Here i…

FieldServer Driver - Serial FS-8700-132 Fire Control Instruments – Gamewell FCI-E3 Series Description The Gamewell FCI E3 Series System Control Units are manufactured by Fire Control Instruments…

The object ids and the measured properties for the inverters and sensors connected to the SMA Webbox can be obtained in a word format log generated from the SMA Sunny Webbbox RPC Client. Fo…

SNMP - Simple Network Management ProtocolSNMP means "Simple Network Management Protocol". When using SNMP, typically one or more managers monitor a group of managed devices. An SNMP network consist…

In order for the Gateway device to be able to receive the data from Veeder Root Panels,the connection parameters must be the same on both the sides, i.e., on the Veeder Root Panel and on the Gateway…

 DO NOT USE THIS DATA – IT IS SUBJECT TO CHANGE AND IS PROVIDED FOR REFERENCE ONLY.  The points listed and the Modbus addresses allocated are typical. We strongly advise you not to hand this to the c…