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5.6 UDP interface – for IT-personnel only

The following chapter is targeted especially to IT-personnel in order to find status data and messages from the InvenSor adsorption chiller.

The InvenSor adsorption chiller comes with a RJ45 Ethernet connection. Through this connection it is possible to receive status data and messages from the InvenSor adsorption chiller. The exchange of data packages is achieved through a UDP-data-socket. The InvenSor chiller works as a UDP-Server. This way data acquisition from any UDP-client is possible. Examples:

embedding into monitoring systems (e.g. NAGIOS) via plug-in

embedding into BMS Software

data transfer to other SPS

Please consider: An example plug-in for the monitoring system NAGIOS can be provided by InvenSor.

The server-socket (InvenSor adsorption chiller) is connected to port 27027. All communication runs through this port. The character set is ASCII (DOS-Latin-1, Windows-1252). After sending the string “invensorinfo”, the InvenSor adsorption chiller will respond with the current set of status data. The time-lag between two requests should be at least 10 seconds. The transmission ends without confirmation.

Ether-net

RJ45

Ether-net

RJ45

InvenSor Controller

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Example:

Client IP: 192.168.2.110 (variable) Client Port: 4025 (variable) InvenSor IP: 192.168.2.105 (variable) InvenSor Port: 27027 (fixed) 1. Client opens UDP-connection 2. Client sends "invensorinfo" to the InvenSor

adsorption chiller 3. InvenSor adsorption chiller receives

"invensorinfo" 4. InvenSor adsorption chiller sends status data 5. Client receives data 6. Client closes UDP-connection

The status data-set matches with the information shown on the display of the InvenSor adsorptions chiller. The start of the transmission is signaled through DATA_GO and word wrap (ASCII dec.: 10), the end of the transmission through DATA_END and word wrap. All information is separated by word wrap. The data set contains the description and the value of the specific information. Both are separated by “ : ” (ASCII dec.: 58), with the description before and the value after the separator. Example:

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Possible messages over UDP-interface

Message

Description

Possible reasons

Stby: Temp.Kaelte < 12°C chiller in standby mode, minimum cold water temperature reached

no cooling demand

cold distribution failure

Stby: Temp.Hot-in < 55°C chiller in standby mode, driving temperature too low

heat demand too high

heat source failure

hot water pump failure

Error: Vak.druck < 5.0mbar internal error, vacuum pressure too low

Error: Temp.Verd < 2.0°C evaporator outlet temperature too low

cold distribution failure

volume flow in chilled water circuit too low

chilled water pump failure

Error: Kaelte-Vol.strom < Soll volume flow in chilled water circuit too low

chilled water pump failure

chilled water circuit flow detector failure

Error: kein Volumenstrom volume flow in re-cooling circuit too low

re-cooling pump failure

re-cooling water circuit flow detector failure

Error: keine Antriebswärme driving temperature too low heat source failure

hot water pump failure

Error: Temp.Hot-In > 100°C

water temperature in at least one circuit exceeds 100 °C

three way mixing valve failure

outlet temperature of heat source too high

incorrect hydraulics installation

Warnung: Antriebs-SW blockiert

flow detector in hot water circuit blocked

hot water circuit flow detector failure

hot water pump failure

Warnung: Antriebspumpe ausgefallen

volume flow in hot water circuit too low

hot water pump failure

hot water circuit flow detector failure