Manual PCI-IDO-48A Series
14
Base A 3 (read/write) Trigger Control/Status
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2
Bit1
Bit0
0
0
0
0
0
trigEvent trigReset
updateMode
The trigEvent bit is read only and is set to a '1' with a rising edge of the External Trigger.
trigEvent is reset to a '0' on a read of Base A 3. The updateMode bit is read/write.
Writing a '0' sets updateMode to External Trigger Mode and a '1' to Immediate Mode. The
trigReset is read/write and only applies if updateMode is set to External Trigger Mode. Writing
a '0' to trigReset will cause both the outputs and the output's buffer to be reset to zeros on a
falling edge of the External Trigger. Writing a '1' causes the outputs and output's buffer to
remain unchanged on a falling edge of the External Trigger.
Base A 4 (write) Port1 High Byte
Bit15
Bit14
Bit13
Bit12
Bit11
Bit10
Bit9
Bit8
P1_15 P1_14 P1_13 P1_12 P1_11 P1_10 P1_9 P1_8
Writing to this address updates the data on Port1 bits 8-15. The data is updated instantly to
the outputs in Immediate Mode and updated on a rising edge of the External Trigger in
External Trigger Mode. Refer to Base A 3 for Immediate and External Trigger
Modes.
Base A 5 (write) Port2 Low Byte
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
P2_7 P2_6 P2_5 P2_4 P2_3 P2_2 P2_1 P2_0
Writing to this address updates the data on Port2 bits 0-7. The data is updated instantly to the
outputs in Immediate Mode and updated on a rising edge of the External Trigger in External
Trigger Mode. Refer to Base A 3 for Immediate and External Trigger Modes.
Base A 6 (write) Port2 High Byte
Bit15
Bit14
Bit13
Bit12
Bit11
Bit10
Bit9
Bit8
P2_15 P2_14 P2_13 P2_12 P2_11 P2_10 P2_9 P2_8
Writing to this address updates the data on Port2 bits 8-15. The data is updated instantly to
the outputs in Immediate Mode and updated on a rising edge of the External Trigger in
External Trigger Mode. Refer to Base A 3 for Immediate and External Trigger
Modes.
Base A 7 (read) Trigger Over-run Count
Bit7 Bit6 Bit5 Bit4 Bit3
Bit2
Bit1
Bit0
0
0
0
0
Cnt3 Cnt2 Cnt1 Cnt0
Reading from this address will return the number of times (0-15) a rising edge of the External
Trigger has occurred without writing to the outputs (Buffer Under-run Error).
The count value is reset to zero when read.
