User manual

Publication 1747-UM011F-EN-P - May 2007
90 Identifying the Components of Your Processor
DH-485
(Color: green)
On (steady) The Communication Active bit (S:1/7) is set in the System Status file and the processor is
actively communicating on the DH-485 network.
Flashing The processor is trying to establish communication, but there are no other active nodes on
the DH-485 network.
Off A fatal error is present (no communication).
RS-232
(Color: green)
On (flashing)
DF1/ASCII mode
The SLC 5/03 processor is transmitting on the network.
Off
DF1/ASCII mode
The SLC 5/03 processor is not transmitting on the network.
On (steady)
DH-485 mode
The Communications Active bit (S:33/4) is set in the System Status file and the processor
is actively communicating on the DH-485 network.
Flashing
DH-485 mode
The processor is trying to establish communication, but there are no other active nodes on
the DH-485 network.
Off
DH-485 mode
A fatal error is present (no communication).
(1)
If the status indicators on the SLC 5/03 processor turn on in a predefined sequence, the SLC 5/03 processor is in the process of downloading a new operating system.
(2)
See chapter 10 for more information on status indicator status.
Processor
Status
Indicator
(1)(2)
When It Is Indicates that