LETS is a flexible and scalable product that can be configured to perform in applications with many machines and users, or just a few. There are two version of LETS: the Standard Version and Expanded Version. The Standard version can communicate with up to 18 SmartPACs or 25 LETS Machine Interfaces (LMIs), the Expanded version can collect data from up to 93 SmartPACs or 125 LMIs .
LETS Standard Version
LETS Expanded Version
TagsA "tag" is a data variable that LETS retrieves from the control. For example, if LETS asks for the tag named "PARTS_COUNT", the control would return the current parts count; when a machine is stopped, the ERROR_CODE tag returns a code that indicates why the machine is down.
The SmartPAC 1 and 2 have 18 standard tags that are sent to LETS. Tag counts for machines other than presses can vary depending on the amount of data that needs to be collected from the machine. The LETS Machine Interface (LMI) uses 12 tags.
Hardware Recommendations:The following hardware recommendations apply to a typical LETS Standard Version installation.