Block

Mask

Description

The National InstrumentsPC-DIO-96 board is a 96-bit parallel digital I/O device from the NI6507/NI6508family.

The board features 4 82C55Parallel Port Interfaces (PPIs). Each PPI controls 24 bits of digital I/O grouped in three 8-bit ports (A, B and C). Each port can be programmed as either inputs or outputs.

This block allows the user to program one port of one PPI as inputs. The block OpPC-DIO-96Digital Out must be used for programming the bits as outputs. MultipleOpPC-DIO-96 Digital In and Digital Out blocks can be inserted in the same model, as long as they do not use the same PPI/Port selection.

Parameters

PCI index	See the glossary definition.
PPI	Select one of the 4 PPIs available.
Port	Select one of the 8-line ports A, B or C of the selected PPI. A different OpPC-DIO-96Digital In block must be used for each I/O port.
Selection of channels used as input	Enter the vector of channel numbers to be monitored by this block. The channel numbers, in the range [0-7], can be entered in any order and must appear only once in the list.
Return acquired data in one single value (range 0 -255)	When this option is checked the block concatenates the individual channel values in one single data value. See the Outputs section for details.
Synchronize	See the glossary definition.

Inputs

This block has no inputs.

Outputs

At each calculation step of the model, the block returns the current values (0 or 1) on the I/O lines.

If the parameter 'Return acquired data in one single value (range 0 - 255)' is not checked, the individual channel values are returned in a vector. In that case, only the values of the channels specified in the channel list parameter are returned and the outputs are in the order of the channel list parameter. The output width of the block is then equal to the number of entries in the channel list parameter.

When the parameter 'Return acquired data in one single value (range 0 - 255) 'is checked, the output size is 1 and the single value returned by the block represents the channel data in binary representation: one bit represents one channel value, the LSB being channel 0 and the MSB being channel 7. The output range is then 0 (all channels are 0) to 255 (all channels values are equal to 1).

Characteristics and Limitations

Connector Pin Assignments

The table below gives the connector pin assignments of the 100-pin I/O Connector of the PC-DIO-96 board. The pin names are formed from the PPI, port and channel numbers as follows: Pin-name= PPI(A,B,C,D) - Port(PA,PB,PC) - Channel number(0..7)
[For example: pin APC6refers to PPI A, Port C, channel 6]

100-pin I/O

Pin	Description	Pin	Description
1	APC7	51	CPC7
2	BPC7	52	DPC7
3	APC6	53	CPC6
4	BPC6	54	DPC6
5	APC5	55	CPC5
6	BPC5	56	DPC5
7	APC4	57	CPC4
8	BPC4	58	DPC4
9	APC3	59	CPC3
10	BPC3	60	DPC3
11	APC2	61	CPC2
12	BPC2	62	DPC2
13	APC1	63	CPC1
14	BPC1	64	DPC1
15	APC0	65	CPC0
16	BPC0	66	DPC0
17	APB7	67	CPB7
18	BPB7	68	DPB7
19	APB6	69	CPB6
20	BPB6	70	DPB6
21	APB5	71	CPB5
22	BPB5	72	DPB5
23	APB4	73	CPB4
24	BPB4	74	DPB4
25	APB3	75	CPB3
26	BPB3	76	DPB3
27	APB2	77	CPB2
28	BPB2	78	DPB2
29	APB1	79	CPB1
30	BPB1	80	DPB1
31	APB0	81	CPB0
32	BPB0	82	DPB0
33	APA7	83	CPA7
34	BPA7	84	DPA7
35	APA6	85	CPA6
36	BPA6	86	DPA6
37	APA5	87	CPA5
38	BPA5	88	DPA5
39	APA4	89	CPA4
40	BPA4	90	DPA4
41	APA3	91	CPA3
42	BPA3	92	DPA3
43	APA2	93	CPA2
44	BPA2	94	DPA2
45	APA1	95	CPA1
46	BPA1	96	DPA1
47	APA0	97	CPA0
48	BPA0	98	DPA0
49	+5V	99	+5V
50	GND	100	GND

Direct Feedthrough	No
Discrete sample time	No
XHP support	Yes
Work offline	No