Figure 2 – Rockwell Automation 20-750-ENETR PowerFlexDual-Port EtherNet/IP Option Module User Manual
Page 21
Rockwell Automation Publication 750COM-UM008A-EN-P - July 2012
21
Installing the Option Module
Chapter 2
• DHCP (Dynamic Host Configuration Protocol)
— Use DHCP, the
default, when you want additional flexibility and ease-of-use compared to
BOOTP in configuring the IP address, subnet mask, and gateway address
for the option module using a DHCP server. To use DHCP as the source
for the IP address, the Node Address switches must be set to a value other
than 001…254 or 888, and
Device Parameter 05 - [Net Addr Sel] must be
set to “3” (DHCP).
Note the option module’s hardware Ethernet Address (MAC) on the
module’s data nameplate label on the backside of the circuit board, which
will be used in step 7 when configuring the DHCP server (see
BOOTP or DHCP Server on page 32
for details).
Figure 2 - Setting the Node Address Switches
TIP
If the PowerFlex 750-Series drive is connected to a Stratix 6000 or Stratix
8000 managed Ethernet switch and the drive is set for BOOTP mode, the
“dynamic IP address assignment by port” (Stratix 6000) or “DHCP
persistence” (Stratix 8000) feature will set the IP address for the drive.
For more details, see the Stratix 6000 Ethernet Managed Switch User
Manual, publication
Stratix 8000 and Stratix 8300
Ethernet Managed Switches User Manual, publicat
.
IMPORTANT
When the DHCP lease expires, the option module stops communicating
on the network, requiring a power cycle or option module reset.
IMPORTANT
Regardless of the method used to set the option module network node
address, each node on the EtherNet/IP network must have a unique IP address.
To change a node address, you must set the new value and then remove and
reapply power to (or reset) the option module.
Settings
Description
001…254
The option module will use the Node Address switch settings for the network node address
(192.168.1.xxx, where xxx = rotary switch settings). The value stored in Device Parameter 05 - [Net
Addr Sel] is automatically ignored.
0
5
4
9
3
8
2
7
1
6
0
5
4
9
3
8
2
7
1
6
0
5
4
9
3
8
2
7
1
6
0
5
4
9
3
8
2
7
1
6
0
5
4
9
3
8
2
7
1
6
0
5
4
9
3
8
2
7
1
6
Ones
Position
Hundreds
Position
Tens
Position