All one-bit data in the protection relay is readable either from the 0X or 1X memory area. The Modbus bit point addresses are similar regardless of the memory area. In addition, the same one-bit data can also be read either from the 3X or the 4X area. In this case, the bit values are packed into 16-bit 3X and 4X registers. The bit locations follow a pattern similar to the 0X and 1X locations.
If a one-bit value is located in the 0X or 1X bit address 1800, the same bit value can also be found in the 3X or 4X register 112 (1800 DIV 16) at register bit 8 (1800 MOD 16). This is easier to understand when the address numbers are expressed in the hexadecimal format: 1800 = 0x708, where the register 112 = 0x70 and bit 8 = 0x8.