2. Programming Concepts
6. If an SA2/SX2 series MPU is connected to a right-side special module, and M1183 is Off, the
range of data registers can be used. Every special module connected to an SA2/SX2 series
MPU occupies ten data registers.
7. If an SA2/SX2 series MPU is connected to a left-side special module, and M1182 is Off, the
range of data registers can be used. Every special module connected to an SA2/SX2 series
MPU occupies ten data registers.
8. SA22/SX2 with firmware version 2.00 or later support the function of keeping track of the time
even after the power is off. When the power is off, this function can go on for about 1 week.