NI SCXI-1000 Chassis Uses

Chassis Uses

Before you configure the chassis, decide whether you are going to use it in multiplexed mode or parallel mode. 

In multiplexed mode, analog input (AI) channels are multiplexed into one module output so that the cabled E/M Series DAQ device has access to the multiplexed output of the module and the outputs of all other multiplexed modules in the chassis. 

In parallel mode, you need a separate E/M Series DAQ device for each module to send each of its output channels directly to a separate AI channel of the E/M Series DAQ device connected to the module.

Configuring the SCXI Chassis

Configuring the chassis involves selecting a chassis or high-level data link control (HDLC) address, line voltage, and fuse value on any chassis. 

Note: Refer to the Read Me First: Safety and Radio-Frequency Interference document before removing equipment covers or connecting or disconnecting any signal wires.

Selecting Chassis Addresses

These sections provide information about how to select addresses for the SCXI chassis.

SCXI-1000/1001Unless you are using multiple chassis and need to configure one or more SCXI chassis for a different address, you can skip this section, and the SCXI chassis retains factory-default address of 0. 

You can configure the SCXI chassis for one of 32 different addresses so that you can connect multiple SCXI chassis to the same control source. The five switches on the front panel of Slot 0 determine the chassis address. 

Switches one through five represent the values 1, 2, 4, 8, and 16, when set to the ON position. When set to the OFF position, their value is zero. The chassis address is the sum of the switch values. Figure 2-7 shows examples of both the factory-default setting of the chassis address 0 and the switch setting for chassis address 19.

Notes :SCXI-1000 chassis through revision D do not have address jumpers or switches and respond to any address, but you cannot use them in multichassis systems. Revision E chassis use jumpers on Slot 0 for chassis addressing. Revision F and later chassis use a DIP switch for chassis addressing.

SCXI-1001 chassis through revision D use jumpers on Slot 0 for chassis addressing. Revision E and later chassis use a DIP switch for chassis addressing.

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