DI93a HESG440355R3 Status Input Module

The DI93a HESG440355R3 bus data storage field occupies 128 cells of 16 bits; the addresses are 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 via the local bus interface. These are achieved by the interface recognising the information word of the traffic manager 70BV01 on the local bus.

DI93a HESG440355R3 The 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 up; 5 is a negative input, i.e., the inverted serial data line DI is called up; and 8 and B are deposited.

DI93a HESG440355R3 internal data storage area occupies 128 cells of the 16-bit memory, the address is 00 to 7F, for the user programme as an intermediate valid storage, they are carried out bit by bit through the instruction table to call the instructions with prefixes 2, 3, and A. The past value storage area occupies 12 bits, the address is 00 to 7F. 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.