SST-DN3-PCI-1 and SST-DN3-PCI-2
Hardware Reference Guide
Card Overview
19
©2004 Woodhead Software & Electronics, Division of Woodhead Canada Limited
Document Edition: 1.1, Document #: 715-0083, Template Edition: 1.1, Template #: QMS-06-045
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
1.5.1.2 CANH, CANL
These are the CAN communication bus signal terminals. Use only shielded twisted pair cable.
1.5.1.3 SHIELD
This is the shield connector. This terminal is “snubbed” to the PC/PCI chassis ground via a
1M-ohm resistor.
Note
According to the DeviceNet specification, the snubber circuit can be
omitted if the card has no local connection to ground.
Note
The shield should be connected directly to earth ground at only one
point in the network. Refer to Section 2.4,
Connecting to a Network
, for
more information.
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