Rockwell Automation 1756-DHRIO ControlLogix Data Highway Plus-Remote I/O Communication Interface Module I.I. - Manual (Page 14)

14 ControlLogix Data Highway Plus-Remote I/O Communication Interface Module
Publication 1756-IN003D-EN-P - July 2008
Check Power Supply and Module Status
At powerup the module’s alphanumeric display begins a cycle through the
following sequences.
• Channel A and the network used for channel A - DH+ or RIO
• Channel A node address, if used for DH+
• Channel A status
• Channel B and the network used for channel B - DH+ or RIO
• Channel B node address, if used for DH+
• Channel B status
This sequence runs continuously during normal module operation.
IMPORTANT For example, if your module uses the following:
• Channel A for DH+ with node address 14
• Channel B for RIO
and the channels are operating properly, you see the following sequence:
• A DH, A#14, A OK, B IO, SCAN, B OK
CHA CHB OK
H+/RIO
Alphanumeric status indicator illuminates and cycles through a
sequence of messages (described on page 15).
Power Supply indicator is green.
Module OK status indicator is
solid red, then flashing green.
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