ABB SS832 3BSC610068R1 Power Voting Unit

The ADCHI register is a read register containing the upper four bits of data from the A/D conversion results. It is used in conjunction with the ADCLO register to read the complete 12-bit data word. When reading data, it is normal convention to read the ADCLO register first, followed by the ADCHI register.

The ADCLO register is a read register containing the lower eight bits of data from the A/D conversion results. It is used in conjunction with the ADCHI register to read the complete 12-bit data word. After a conversion is complete (as reported by the DONE bit in the 1D3h register) the ADCLO register should be read first, followed by the ADCHI register. A word-wide input instruction from the ADCLO register (in ax,dx) fetches data from both registers in the proper sequence. The data registers are located on an even address boundary to facilitate efficient single-cycle reading of the A/D data.

Digital I/O Interface

 The EPIC-2 includes a 16-channel digital I/O interface. The digital lines are grouped as two 8-bit bi-directional ports. The direction of each port is controlled by the DIOEN0 and DIOEN1 bits in the IIOCR register (see Industrial I/O Control Register), and each signal is pulled up to +5V with a 10K ohm resistor. The digital I/O ports are powered up in the input mode. The 24 mA source/sink drive and short protected outputs are an excellent choice for industrial TTL interfacing.

BINARY FORMAT (0 TO +4.095V ONLY) The full analog input range is divided into 4096 steps. The output code (0000h) is associated with an analog input voltage of 0 Volts (ground). All codes are considered positive.

PC/104 Expansion Bus 

EPIC-2 has limited support of the PC/104 bus. Most PC/104 cards will work but be sure to check the requirements of your PC/104 card against the list below. PC/104 I/O SUPPORT I/O ranges supported: 

• 0x100-0x370 excluding the following ports: 

• COM ports: COM1 (0x3F8-0x3FF), COM2 (0x2F8-0x2FF), COM3 (0x3E8-0x3EF), COM4 (0x2E8-0x2EF) 

• LPT ports: LPT1 (0x378-0x37F) 

• FDC ports: 0x3F0-0x3F7 

• Digital I/O: 0x1D0-0x1E0 

• Fixed disk controller: 0x1F0-0x1FF

Application industry

The products can be used in the following industries: power plant, paper making, steel, mining, rubber, water supply, cement, chemical industry, glass, printing

Textile, machinery, plastics, coatings, medicine, hospitals, food, hotels, scientific research institutions

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