Control Solutions Knowledgebase
ValuPoint Articles
Accessing Real Time Clock from PL/i Program
Added on Tue, Sep 6, 2016
This article applies to both ValuPoint controllers and i.CanDoIt (AddMe) web servers. PL/i programs in Modbus devices have access to reading the real time clock/calendar if the hardware has a clock/calendar. There are special "registers" that may be... Read More
Analog I/O Scaling
Added on Fri, Oct 17, 2014
Scaling for analog inputs uses the traditional slope-intercept formula y=mx+b. Calculation of slope would be m=(y2-y1)/(x2-x1). Once slope (m) is calculated, solve for intercept (b). Scaling for analog outputs would theoretically be the reverse of... Read More
ValuPoint Application Example - 4-20mA Output Connected to External BACnet Device
Added on Fri, Oct 17, 2014
Our customer had the following requirement: Read a value from another BACnet MS/TP device, and produce a 4-20mA signal proportional to a certain range of the value read. The ValuPoint VP4-2330 is capable of doing this with just minor programming. An... Read More