Omron 3G3MV-PDRT2 - Devicenet Communications Specifications

Chapter 1
1-16
Functions and System Configuration
1-5-3 DeviceNet Communications Specifications
Operating
environ-
ment
Compatible
OS
Windows 95, 98, ME,
NT 4.0, 2000, or XP
Windows 95, 98, ME,
or NT 4.0
Windows 95, 98, 2000,
or XP
Minimum com-
puter require-
ments
IBM PC/AT or compatible (OS requirements may be stricter than the fol-
lowing.)
CPU: 166 MHz Pentium min.
Memory: 32 MB min.
Hard disk: 15 MB min. free space
Connec-
tion
method
Dedicated
interface
Sold separately ISA Board PCMCIA Card
Serial Connect from the computer’s COM port through a CS/CJ-series PLC.
(This connection is possible when a CS/CJ-series DeviceNet (Master)
Unit is being used.)
Ethernet Connect from the computer’s Ethernet port through a CS/CJ-series
PLC’s Ethernet.
(This connection is possible when a CS/CJ-series DeviceNet (Master)
Unit is being used.)
Relation to Network Using a dedicated interface: Connect directly to DeviceNet.
• Operates as one node on the Network, requires one node address,
and only one Configurator can be connected to the Network.
• The Configurator can be disconnected from the Network after remote I/
O has been allocated.
Using a serial or Ethernet connection:
• Possible only when a CS/CJ-series DeviceNet (Master) Unit is being
used.
• A DeviceNet node address is not required. (Connects through the
DeviceNet (Master) Unit.)
• A node address is not allocated, so the Configurator can be connected
or disconnected freely. (There are some limitations compared to a
direct DeviceNet connection through a dedicated interface. For exam-
ple, the refreshing interval for PV monitoring is much slower that it is
with a direct connection.)
Item Specifications
Communications protocol DeviceNet
Supported connections (com-
munications)
• Remote I/O
Master/Slave connection (Poll, Bit-strobe, COS, or Cyclic)
• Explicit messages
Explicit connection
Both conform to DeviceNet specifications.
Connection forms Combination of multi-drop and T-branch connections (for trunk and drop
lines)
Baud rate 500 Kbps, 250 Kbps, or 125 Kbps (switchable)
Communications media Special 5-wire cables (2 signal lines, 2 power lines, and 1 shield line)
• Thick Cable: DCA2-5C10 (100 m)
• Thin Cable: DCA1-5C10 (100 m)
Dedicated interface --- 3G8F5-DRM21-E 3G8E2-DRM21-EV1