Omron CJ1W-EIP21 用户手册
83
DM Area Allocations
Section 4-3
4-3
DM Area Allocations
4-3-1
Overview of the Allocated DM Area Words
The various kinds of data are stored in the offset positions shown in the fol-
lowing diagram, from the beginning word in the area for each Unit.
lowing diagram, from the beginning word in the area for each Unit.
The beginning word m is calculated by the following equation:
Beginning word m = D30000 + (100 x unit number)
4-3-2
Details of the Allocated DM Area Words
IP Address Display/Setting Area (m+98 and m+99)
IP address: (1)(2).(3)(4).(5)(6).(7)(8) (Hex)
If the local IP address is set to a value other than 0.0.0.0 in the TCP/IP Config-
uration, this area (words m+98 and m+99) will act as an IP Address Display
Area and the local IP address set in the TCP/IP Configuration will be read and
stored here when the power is turned ON or the Unit restarted.
uration, this area (words m+98 and m+99) will act as an IP Address Display
Area and the local IP address set in the TCP/IP Configuration will be read and
stored here when the power is turned ON or the Unit restarted.
If the local IP address in the TCP/IP Configuration is set to 0.0.0.0, this value
is read by the EtherNet/IP Unit when the power is turned ON or the Unit
restarted and is used as the local IP address.
is read by the EtherNet/IP Unit when the power is turned ON or the Unit
restarted and is used as the local IP address.
If the local IP address in these words and the TCP/IP Configuration are both
set to 0.0.0.0, the default IP address (192.168.250.Node_address) will be
used. For details on the IP address settings, refer to SECTION 5 Determining
IP Addresses.
set to 0.0.0.0, the default IP address (192.168.250.Node_address) will be
used. For details on the IP address settings, refer to SECTION 5 Determining
IP Addresses.
Note
(1) If an IP address other than 00.00.00.00 is set as the local IP address in
the TCP/IP Configuration, the IP Address Display/Setting Area words
(m+98 and m+99) will be overwritten with the TCP/IP Configuration’s IP
(m+98 and m+99) will be overwritten with the TCP/IP Configuration’s IP
Offset
Bit
Data direction
m
m+97
m+98
m+99
15
08 07
00
(Not used)
IP Address Display/Setting Area
Ethernet Unit to CPU Unit or
CPU Unit to Ethernet Unit
CPU Unit to Ethernet Unit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
m+98
(1)
(2)
(3)
(4)
m+99
(5)
(6)
(7)
(8)
(1)(2).(3)(4).(5)(6).(7)(8) (Hex)
Application
Setting device
Setting area
Remarks
Simple operation (i.e., The TCP/IP
Configuration is left at its default
settings. Only the IP address is
set.)
Configuration is left at its default
settings. Only the IP address is
set.)
Programming Con-
sole (CX-Program-
mer can also be
used.)
sole (CX-Program-
mer can also be
used.)
Allocated words in
the DM Area
the DM Area
• The setting in the allocated DM Area
words is enabled only when the IP
address is set to 0.0.0.0 in the TCP/IP
Configuration.
address is set to 0.0.0.0 in the TCP/IP
Configuration.
• If the IP address is set to a value other
than 00.00.00.00 in the TCP/IP Con-
figuration, this value is stored in the
allocated words in the DM Area.
figuration, this value is stored in the
allocated words in the DM Area.
Operation with the desired IP
address set in the TCP/IP Configu-
ration.
address set in the TCP/IP Configu-
ration.
CX-Programmer
(Unit Setup)
(Unit Setup)
Setup TCP/IP Con-
figuration Dialog Box
figuration Dialog Box
The IP address set in the Setup TCP/IP
Configuration Dialog Box is stored in
the allocated DM Area words.
Configuration Dialog Box is stored in
the allocated DM Area words.