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Hello, I have a project were after intervals of 15mins, It reads a value. Is there a way to show on the HMI a count down/count up from the timer? I currently use a Variable: Timer Current and Variable: Timer Preset. But neither seem to display right. It could be due to the fact that I'm not sure how to display the format.
We've had some nice application stories recently Here's a cool one about timber drying kilns that require reliable, automatic temperature control - and implement it with Unitronics Vision350 PLC+HMI controllers Read about the Timbersoft Kiln Drying application here.
Samba™ is an all-in-one palm-sized HMI + PLC + onboard I/Os. As a trendsetter in the field of all-in-one PLC + HMI integrated controllers, Unitronics has specifically developed Samba for applications that require PLC control, but that are limited by budget to simple text displays. System integrators and OEMs often develop applications that require PLC control, but that settle on simple text displays due to limited budget. Samba's beautiful HMI 3.5” QVGA 16-bit touchscreen enables data entry and display of variable data, including color Trend graphs and alarm screens. The HMI supports 24 user-designed screens, and up to 40 images per application. The integrated PLC controller offers a broad range of features including 2 auto-tuned PID loops, time-based RTC control, datalogging, recipes and more. Internal memory holds 0.5 MB of application logic, plus 512K for fonts and 0.5 MB for images. Onboard I/Os offer digital, analog, and high-speed functionality. The flat fascia and IP66/IP65/NEMA4X rating makes Samba an excellent fit for the food & pharmaceutical industries--ideal wherever spray/wipe down requirements apply. Samba offers a built-in RS232 port. You can add an additional RS485 serial, Ethernet, or CANbus port. Samba supports GPRS/GSM, email, SMS, as well as industrial TCP/IP protocols, MODBUS, DF1 slave, CANopen, J1939 and more—and it may be adapted to any 3rd-party protocol. Unitronics free VisiLogic software provides a single simple environment for hardware and communications configuration, Ladder application development, and HMI design, including a free library of industrial images. Free utilities support remote PC access and data export. Unitronics offers free technical support for all of their products, and an active user forum. Samba offers all the functionality system integrators need for small applications, reduces space requirements, wiring, and eliminates the need to set up Panel-PLC communication—resulting in an excellent price/performance ratio. For more information, go to: http://www.unitronics.com/plc-hmi/samba