INFICON HPG400-SD ATM to Ultra-High Vacuum Gauge (DeviceNet) User Manual

Page 7

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7

The network status LED indicates the status of the DeviceNet communication link.

For this state

LED state To indicate

Not Powered/Not Online

Dark

Device is not online.
• The device has not completed the

Duplicate MAC_ID test yet.

• The device may not be powered,

look at Module Status LED.

On–line, Not Connected

Flashing

green

Device is online but has no connections
in the established state.
• The device has passed the

Dup_MAC_ID test, is online, but
has no established connections to
other nodes.

• The device is not allocated to a

master.

Link OK Online, Connected

Green

The device is online and has connec-
tions in the established state.
• The device is allocated to a Master.

Connection Time Out

Flashing

red

One or more I/O Connections are in the
timed out state.

Critical Link Failure

Red

Failed communication device. The
device has detected an error that has
rendered it incapable of communicating
on the network (Duplicate MAC ID, or
Bus–off).


During device initialization, the node address switches are read by the device
firmware. If the switches specify a valid DeviceNet MAC ID, i.e. a value from
0 … 63, this value is used as the device MAC ID. If the specified MAC ID differs
from the value stored in the device’s non-volatile RAM (NVRAM), the new MAC ID
will be saved in NVRAM. If the switches specify an invalid DeviceNet MAC ID, i.e. a
value greater than 63, the current value stored in the device’s NVRAM is used as
the device MAC ID.

A single, rotary switch is provided for configuring the data rate of the device. The
switch has three valid positions for the DeviceNet data rates, 125, 250, and
500 kbaud, where the position 1 is equal to 125 kbaud, 2 equal 250 kbaud and 5
equal 500 kbaud. All remaining switch positions specify software selection of the
data rate.

The device has two setpoint relays (Setpoint A and Setpoint B). The setpoints of
these relays are adjustable only by two potentiometers (marked SETPOINT A and
SETPOINT B).
The relay contacts are available at the 15-pin D-Sub connector.





1.5.2 Network Status LED

1.5.3

Node

Address

Switch

1.5.4

Data Rate Switch

1.5.5

Setpoint

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