User`s guide

DDE Item Names In PCIS-DDE • 33
* Since each DI/O port of PCI-7248/96 can be set as input port or output
port, the item name PCP is used to configure the direction of each port.
One bit of the poked data of PCP controls one port. The port names of
PCI-7248/7296 and their corresponding control bits in PCP are listed in
the following table:
Port Name
Controlled Bit in PCP Remarks
P1A 0 For both PCI-7248/7296
P1B 1 For both PCI-7248/7296
P1CU 2 For both PCI-7248/7296
P1CL 3 For both PCI-7248/7296
P2A 4 For both PCI-7248/7296
P2B 5 For both PCI-7248/7296
P2CU 6 For both PCI-7248/7296
P2CL 7 For both PCI-7248/7296
P3A 8 For PCI-7296 only
P3B 9 For PCI-7296 only
P3CU 10 For PCI-7296 only
P3CL 11 For PCI-7296 only
P4A 12 For PCI-7296 only
P4B 13 For PCI-7296 only
P4CU 14 For PCI-7296 only
P4CL 15 For PCI-7296 only
* For example, if P1A, P1B, P1CH, P1CL are set as output ports and P2A,
P2B, P2CH, P2CL P3A, P3B, P3CH, P3CL, P4A, P4B, P4CH, P4CL are
set as input ports, the poked value in hexadecimal format will be 000F,
that is 0000 0000 0000 1111 (in binary format).
* For “Nth bit Digital Data In” command, the bit number and their related port
name are listed in the following table:
Port Name Valid bit number in PBI Remarks
P1A 0 ~ 7 For both PCI-7248/7296
P1B 8 ~15 For both PCI-7248/7296
P1C 16 ~ 23 For both PCI-7248/7296
P2A 24 ~ 31 For both PCI-7248/7296
P2B 32 ~ 39 For both PCI-7248/7296
P2C 40 ~ 47 For both PCI-7248/7296
P3A 48 ~ 55 For PCI-7296 only
P3B 56 ~ 63 For PCI-7296 only
P3C 64 ~ 71 For PCI-7296 only
P4A 72 ~ 79 For PCI-7296 only
P4B 80 ~ 87 For PCI-7296 only
P4C 88 ~ 95 For PCI-7296 only