User manual

8
Publication 1738-SG001B-EN-P
ArmorPoint I/O
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ArmorPoint I/O offers four interfaces for connecting to DeviceNet. Refer to the following
table.
FFoorr TThheessee FFeeaattuurreess::
y Behaves as a slave device on the Main Network and a
master on the POINTBus
y Allows a group of I/O modules on the Subnet to act as a
single node on the Main Network
y RSNetWorx™ for DeviceNet software is needed for
configuration of the 1738-ADN12, -ADN18, or -ADN18P
on the Main Network and the POINTBus
y Configuration on the POINTBus consists of a scan list
that is very similar to those used in all of the DeviceNet
master scanner modules
y Acts like a 1738-ADN12 or -ADN18, with additional
capabilities
y Has a second, M12-style connector that extends the
Subnet off the module, so that any DeviceNet-capable
device could be connected to a subnet and scanned by
the 1738-ADNX
y Node numbers of the devices on the POINTBus and
subnet would not count against the 63 slave nodes
allowed on the Main Network
y Data from these devices would be included in the data
being sent to/from the 1738-ADNX on the main network
y Network on the second connector is electrically isolated
from the Main Network and can be used to extend the
total DeviceNet trunk line distance
For example: with thick round media at 125K baud, you
could run a maximum of 500m to a 1738-ADNX on the
Main Network. You could then wire an additional 500m of
cable on the subnet connector and double the distance of
the network.
Remember that this Subnet needs terminating
resistors and a 24V dc power connection, the same as any
other DeviceNet network.
RReemmeemmbbeerr:: SSeelleecctt::
y All ArmorPoint I/O modules
count as a single node on the
Main Network.
y The Main Network distance
is acceptable.
y ArmorPoint I/O expansion
power supplies are permitted
to add more ArmorPoint I/O
modules.
1738-ADN12 (M12-style
network connectors)
1738-ADN18 (mini-style
network connectors)
1738-ADN18P (mini-style
network connectors with pass-
through)
y All ArmorPoint I/O modules
and some third-party field
devices count as a single
node on the Main Network
y Devices on the Subnet and
the Main Network need to
be connected at different
baud rate speeds or use
different sampling methods
(i.e., COS, polled, etc.)
y The Main Network distance
is not acceptable, and
additional distance is
required.
y An expansion power supply
may be required to add more
modules.
y ArmorPoint I/O expansion
power supplies are
permitted.
1738-ADNX