C-3
Isolated Control Input Register Data Format
The digital control input states are read as a single byte from the port at
base a1h. Each of the eight bits within the byte corresponds to a
particular digital input so that a high bit (equal to 1) energizes an input
while a low bit (equal to 0) de-energizes the input. Register bits are
assigned as shown in Table C-3.
Table C-3. Input Addresses in the Isolated Control Input Register
Address
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Base A1h
IP7
IP6
IP5
IP4
IP3
IP2
IP1
IP0