Can Digital outputs on SCB-68A be designated as 16 channels?

[wltmek123]

Hi

I'd like to allocate 16 channels to digital outputs through NI (SCB-68A) from a desktop program.

but SCB-68A has P0.0 - P0.7 (I know that this means port 0:line 0-7. Is this right?)

I need to allocate 16 channels (or 16 bit? I am not sure) to the same port and 16 different lines.

How can I do this?

[Kevin_Price]

The SCB-68A is mainly just a terminal block.  There are a variety of available pinout labels for it, depending on the device you're hooking up.  It'll be your actual data acq device that determines how many lines of DIO you have and how they're split into ports.

What data acq device is at the other end of the terminal block?

-Kevin P

[wltmek123]

That's PLEXON Omniplex, which is a neural activity recording device.

I need to enter the 16 digital signals and a strobe signal to the Omniplex. but the strobe signal does not have to be the same port.

So, I need 16 digital outputs (line?) of the same port.

[santo_13]

What Kevin meant was, what NI instrument is connected to the SCB-68A accessory?

To make things clear, typically NI's DAQs have digital lines in banks/ports of 8 channels. This accessory SCB-68A just fans them out individual wires from the VHDCI cable into a terminal block so that it is easy for you to wire external equipment.

In your case (I assume),

(Some NI DAQ) -> cable -> SCB68A -> PLEXON Omniplex

Let us know that "some NI DAQ" because there are many features that are model specific.

[wltmek123]

Okay. What you guys asked me was probably 'PCIe6353', right?

[santo_13]

Yes, that was the important piece of information that you missed sharing.

Going by spec sheet - Port0 has 32 channels, Port1 has 8 channels and Port2 has 8 channels.

Next, to answer your question of 16 channels together in a single port,

• You can use Port0 since it has 32 channels together

SCB68A is an accessory common to multiple DAQ models and the terminal names will differ based on the actual pinout on the instrument side. To know the terminal mapping to the port channels you would need to refer this document 

Next, your question might be, I don't see the Port0 channels more than 7 in this image, this is because this pinout is for Connector 0 only - P0.8 to P0.31 are on Connector1

This means you need to have use SCB68A with connector1 to get a continuous 16 channels from Port0, below image shows the terminal labels if the accessory is connected to Conn1 of 6353