Daisy Chaining The Er-8/16; Using The Sc-205X Series With The Er-8 - National Instruments ER-8 User Manual

Signal Connections

Daisy Chaining the ER-8/16

To expand your system from 16 channels to 24 channels, connect a 26-pin NB7 ribbon cable
from the ER-16 OUT connector to the ER-8 IN connector.
Note:
connect an external supply to the ER-8 (the receiving unit). Verify that SW1 is
DO NOT
in the INT position on the receiving unit. Connect the external supply to the sending
unit.
The power supply will also be daisy-chained through the NB7 cable to the expanded system.
To expand your system from 16 channels to 32 channels, connect a 26-pin NB7 ribbon cable
from one ER-16 OUT connector to the other ER-16 IN connector.
Note:
connect an external supply to the ER-16 (the receiving unit). Verify that SW1
DO NOT
(see Figure 2-1) is in the INT position on the receiving unit. Connect the external
supply to the sending unit.
The power supply will also be daisy-chained through the NB7 cable to the expanded system.
Warning:
Connecting the cable to the wrong connector can damage the ER-8/16 or your
DAQ device. National Instruments is
such connections.

Using the SC-205X Series with the ER-8

You can use your SC-205X Series cable adapter with the Lab or MIO boards to control the ER-8.
Connect the 26-pin cable to the ER-8 IN connector only. In this configuration, you can control
only channels 1 through 8. Digital lines—port A<0..7> as shown in
Figure 3-3a—control the relays. Port B<0..7> is not used.
Warning:
When connecting more than one ER-8 with any of the SC-205X Series cable
adapters, verify that SW1 (see Figure 2-1) is at the EXT position and that you are
using an external power supply.
Connecting the cable to the wrong connector can damage the ER-8/16 or your
DAQ device. National Instruments is
incorrect connections.
attempt to connect an ER-16 to any of the SC-205X Series cable adapters.
DO NOT
For additional information on the SC-205X Series cable adapters refer to the SC-205X Series
User Manual.
ER-8/16 User Manual
liable for any damages resulting from
NOT
liable for any damages resulting from
NOT
3-8 © National Instruments Corporation
Chapter 3