0 _devicenet models – Brooks Instrument XacTorr CMX160 User Manual
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6.0 MODELS WITH DEVICENET
6.1 DEVICENET POWER UP SEQUENCE
Applying power to a DeviceNet CMX initiates a power-up sequence that
initializes the embedded Vacuum Measurement system along with performing a
Module and Network test. The real time status of these tests is indicated on the
Module and Network LEDs on the top of the device.
After power is applied, the CMX flashes the Module and Network LEDs
according to the following sequence. If this sequence does not occur, a problem
exists with module power or with the device itself.
Module LED Power-up Sequence: Off, Green (250 mSec), Red (250 mSec).
Network LED Power-up Sequence: Off, Green (250 mSec), Red (250 mSec).
After the LED flash sequence has completed, the Module and Network LEDs will
display the real time status of the Module and Network respectively. The
following tables describe the status LED behavior:
Table 11: DeviceNet: MODULE LED
Table 12: DeviceNet: NETWORK LED
6.2 DEVICENET AND NETWORKING ISSUES AND SOLUTIONS
There are a number of initialization failure scenarios that can occur with
DeviceNet. These issues include wrong default assembles or produced and
consumed paths, incorrect address or baud rate settings, network wiring,
network termination, and network power supply problems. Several of the more
common initialization problems are:
LED STATE
PROBLEM
SOLUTION
Off
Power off
No power applied to the device.
Flashing Green-
Red
Device self-test
Device is in self-test. The DeviceNet
specifications defines blink rates and
patterns for the Modules Status LED
during self-test.
Green
Unit is operating normally
No corrective action required.
Red
Unrecoverable fault
Device has detected an unrecoverable
fault.
LED STATE
PROBLEM
SOLUTION
Off
Power off
No power applied to the device.
Flashing Green-
Red
Device self-test
Device is in self-test.
Flashing Green
On-line, not connected
Device is operating normal. It is on-line but no connection has
been established.
Green
On-line, connected
Device is operating normal. It is on-line and one or more
connections are established.
Flashing Red
Connection time out
One or more connections have timed out.
Red
Unrecoverable fault
Device cannot communicate on the network.
(Duplicate Macld or Bus-off condition)
6.0
_DEVICENET MODELS