Advantech PCL-832, Manual

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50 PCL-832 User's Manual
I/O Address space
The PCL-832 uses 32 consecutive addresses in the PC I/O address
space. DIP switch SW1 sets the card's base, or beginning address.
Specific I/O ports are referred to by their offset from the base address,
BASE. For example, the address for the seventh register is BASE+6.
I/O address Map
The following table gives the assignment of each of the card's ports.
I/O port assignments
Port Read Write
BASE+0 CH1 error counter value CH1 DDA pulse buffer
BASE+2 CH1 status CH1 scaling gain
BASE+4 DDA cycle time
BASE+8 CH2 error counter value CH2 DDA pulse buffer
B A S E + 0 A CH2 status CH2 scaling gain
BASE+10 CH3 error counter value CH3 DDA pulse buffer
BASE+12 CH3 status CH3 scaling gain
BASE+18 DDA cycle gen. enable
BASE+1A PCL-832 RESET