Chapter 3 System Configuration
3-2
3.2 Network
Configuration
3.2.1 Overview
Figure 3.2 Device network configuration
DeviceNet configuration devices are shown in table 3.1 .
These products must be prepared separately when using the EH-RMD/EH-IOCD and distributed I/O slave units on
DeviceNet.
Table 3.1 Network configuration devices
No. Device
Usage
Remark
1]
PC
Used as a platform for the configurator.
Windows
95/98/2000/NT/XP
2] Configurator
Creates a scan list and downloads to the master module.
Or issuing the Explicit message to the slave device.
Uses either 3], 4], or 5] to communicate with each device via the
network in case of using “RSNetWorx for DeviceNet” (made by
Rockwell Software).
In case of EH-RMDCFG (made by Hitachi), it communicates
with each device via a CPU module.
.
3] RS-232C
interface
Communicates with DeviceNet using the serial port.
“1770-KFD” (made by Rockwell Automation)
4]
PCI card interface
Communicates with DeviceNet using the PCI card.
“1784-PCID” (made by Rockwell Automation)
5] PCMCIA
interface
Communicates with DeviceNet using the IC card.
“1784-PCD” (made by Rockwell Automation)
Use one of these
interfaces, when
using the Rockwell
configurator.
6]
Communication
power supply
24 V DC network power supply
7]
Termination
resistor
Attached to both ends of the trunk line. (121
Ω
, 1% metal
coating, 1/4 W)
8] Trunk
line
9] Drop
line
DeviceNet dedicated cables can be thick cable and/or thin cable.
The wiring length of the network varies depending on the cable
used.
Thick cable cannot
be used for a drop
line.
10] Device
tap
Used as a connection between the trunk line and a drop line as
well as between two drop lines.
11] Power supply tap
Used for supplying power to the network.
Communication
power supply
6]
7]
8]
7]
11]
EH-RMD
5] PCMCIA
PO WER
E H -1 5 0
0
4
8
12
1
5
9
13
2
6
10
14
3
7
11
15
0
4
8
12
1
5
9
13
2
6
10
14
3
7
11
15
0
4
8
12
1
5
9
13
2
6
10
14
3
7
11
15
0
4
8
12
1
5
9
13
2
6
10
14
3
7
11
15
0
4
8
12
1
5
9
13
2
6
10
14
3
7
11
15
EH-IOCD
4] PCI
3] RS-232C
1]
2]
HITACHI RXD16D
MS
NS
9]
10]
HITACHI RXD16D
MS
NS
Maximum branch
line length 6m
RDX16D
