Table B-4. 26-Pin Out Connector Pin Descriptions - National Instruments ER-8 User Manual

I/O Connectors
Pin Signal Name
10, 12, 14, PD<7..0>
16, 18, 20,
22, 24
9, 11, 13, PC<7..0>
15, 17, 19,
21, 23
2, 4, 6, GND
8, 26
1, 3, 5, 7, +5 V
25
ER-8/16 User Manual

Table B-4. 26-Pin OUT Connector Pin Descriptions

Description
Port D Channels 7 through 0—These signals are for daisy
chaining to another ER-8 or ER-16. Each of these pins
controls the relay channel of the daisy chained ER-8 or
ER-16. A digital high on these pins connects the COM
contact of a channel to the NO contact of that channel. A
digital low on these pins connects the COM contact of a
channel to the NC contact of that channel.
Port C Channels 7 through 0—These signals are for daisy
chaining to another ER-8 or ER-16. Each of these pins
controls the relay channel of the daisy chained ER-8 or
ER-16. A digital high on these pins connects the COM
contact of a channel to the NO contact of that channel. A
digital low on these pins connects the COM contact of a
channel to the NC contact of that channel.
Ground—These pins are connected to the ground on the
ER-8/16.
+5 VDC supply—These pins are connected to the +5 V
supply on the ER-8/16.
B-6 © National Instruments Corporation
Appendix B