D685A1156U01 Status Input Module

The D685A1156U01 bus data storage field occupies 128 cells of 16 bits; the address is 00 to 7F, and every processing cycle, the local bus data is read in and the processed data results are sent to the local bus through the local bus interface. These are achieved by the interface recognising the information word of the traffic manager 70BV01 on the local bus.

The D685A1156U01 processing section calls and stores the data in the data storage area one by one by means of the instructions with prefixes 4, 5, 8 and B. The functions of the four prefixes are as follows: 4 is a positive input, i.e., the serial data line DN is called; 5 is a negative input, i.e., the serial data line DI is called for inversion; 8 and B are deposited.

D685A1156U01 internal data storage area occupies 128 units of the 16-bit memory, address is 00 to 7F, for the user program as an intermediate valid storage, they are called through the instruction table bit by bit with the prefix 2, 3, A instructions. The past value storage area occupies a 12-bit memory. 1,024 units store data for special functions, such as time-related or status input module data, which cannot be accessed directly by the user.