Profile: Transtronics, Inc. specializes in offering automation products. We offer programmable logic controllers, frequency drives, motor protectors, power supplies, self powered current sensors, and various other electronic products. The T1-16S series are micro programmable controllers with optional add-on expansion I/O modules. Their communications capability, advanced instruction set, and large program and data memory make it a choice for applications previously requiring larger more expensive programmable controllers. The T1-16S's high-speed performance makes sophisticated machine control applications a snap. T1-16S systems can expand two ways. The T1-16S has two high-speed (5k pps (pulse per second)) counter inputs. The counters are independent of each other and of the CPU scan for counting applications requiring high-speed compare, reset, and strobe. The counters can also work together as a quadrature counter to count a 2-phase pulse encoder signals. While in the quadrature counter mode, it works all the way up to 20,000 cps (counts per second).