41
Presentation (continued),
configuration
0
IP 67 modular I/O splitter boxes
for fieldbuses 0
Advantys™ Distributed I/O, FTM splitter boxes
DeviceNet bus presentation
The DeviceNet system is a sensor/actuator bus system of the open Low-End type,
used in various industrial applications and, in particular, the automobile industry. It is
based on CAN technology (OSI layers 1 and 2).
The DeviceNet bus is based on the Master/Slave principle.
The physical link consists of 2 shielded twisted pairs (2 wires for data, 2 wires for
auxiliary supply to sensors), to which up to a maximum of 63 slaves can be
connected. The binary rate varies, depending on the length of the bus, from
125kbits/s for 500 m (1640 ft.) to 500 kbits/s for 100 m (328.1 ft.).
Each end of the bus must be fitted with a line terminator.
DeviceNet bus configuration
An .eds file is assigned to each product, which contains all the important information
relating to the product. An icon (.ico) is also available for installation in the system
configurator.
When the network is scanned, the identification data is compared with that of the
Slaves present on the network and assigned accordingly. After the scanning phase,
the scanner will have identified all the Slaves and saved information relating to data
length and operating mode.
The DeviceNet bus Master establishes a peripheral image of all the devices detected
on the DeviceNet bus and incorporates them according to their physical location in a
Scan list. The user can then assign the Scan list, according to the peripheral image
of the bus devices, to logic addresses in the PLC.
bAddressing
The addresses are configurable from 1 to 63 by means of 2coding wheels (x 10 and
x1). A 3rd coding wheel enables the data transmission speed to be selected
(3speeds can be selected: 125, 250 and 500 kbits/s).
FTM 1DN FTM 1DN
Altivar
®
58 Drive
Modicon®
Premium™ PLC
Modicon®
Momentum™
PLC
Tego® Power
Connection
From 1 to 63 Slaves
Other Master
DeviceNet bus
TeSys®
Model U
Description:
page 43 Connections:
pages 44, 45 Characteristics:
pages 46, 47 References:
pages 48, 49 Dimensions, schemes:
pages 50, 51