I. Introduction
    SP1N series is up to 128 points of the pervasive control mini PLC. In addition to expansion of input and output, also has analog volume control and communications, the expansion of the link function. Therefore, SP1N series can be widely used in the general order of control.

Second, characteristics:
1. Integrated & cost: CPU · power input and output into one; by using the display module and the function expansion board, you can very easily upgrade their systems.
2. Fuselage compact, high-speed operation: Basic instructions :0.55-0 .7 μs / instruction; Application instruction: 3.7-Number of 100μs / instructions.
3. Use at ease, large memory and memory specifications: Built-in EEPROM memory, step 8000; no batteries, no maintenance.
4. The rich resources of soft parts: auxiliary relay: 1536 points, timer: 256 points, counter: 235 points; data register: 8000.
5. Control the size :24-128 points (basic unit: 24/40/60 points).