Omron OMNUC W Series Manual page 19

1 Features and System Configuration
1.4.4 DeviceNet Communications Specifications
1.4.4 DeviceNet Communications Specifications
Item
Communications Protocol
Supported Connections
(Communications)
1
Connection Methods
Baud Rate
Node Address Settings
Communications Media
Communications Distance
Communications Power
Supply
Communications
Power Supply
Current Consumption
Maximum Number of Nodes 64 (DeviceNet Configurator is counted as 1 node when connected.)
Maximum Number of
Slaves
Communications Cycle
Time
Error Control
* Values in parentheses are for thin cable.
The DeviceNet Unit provides the following DeviceNet communications specifications.
Conforms to DeviceNet
Master-slave connections: Remote I/O and Explicit Messagee communications
Combination of multi-drop and T-branch connections (for trunk or drop lines)
Set on rotary switch (DR) to 125, 250, or 500 kbit/s.
×
Set on rotary switches ( 1 and
Special 5-wire cable (2 signal wires, 2 power supply wires, and 1 shield wire)
Baud Rate
(kbit/s)
500
250
125
11 to 25 V DC
20 mA max.
63
DeviceNet processing time
From DeviceNet Unit start command until
command to Servo Driver
Explicit Message response time
CRC errors
1-8
Specifications
×
10) to an address between 0 and 63.
Max. net- Max. drop
work length line length
(m) (m)
∗
6
100 (100)
∗
6
250 (100)
∗
6
500 (100)
1 ms or less to 4 ms
Min.: 8 ms
Max.: 16 ms
Normal attributes: 1 ms or less to 4 ms
Reading/writing servo parameter: 28 ms max.
Max. total
drop line
length (m)
39
78
156