Communications Specifications - Omron CJ1W-EIP21 - 10-2010 Operation Manual

EtherNet/IP Unit and Built-in EtherNet/IP Port Specifications
2-1-3

Communications Specifications

Item
CIP Tag data Number of connections 256
service links
Packet interval (refresh
(Cyclic
cycle)
communi-
cations)
Allowed communica-
tions bandwidth per
Unit
Number of tags that
can be registered
Tag types
Number of tags per
connection (= 1 tag
set)
Maximum link data size
per node (total size of
all tags)
Maximum data size per
connection
Number of registrable
tag sets
Maximum size of 1 tag
set
Maximum number of
tags that can be
refreshed per CPU Unit
cycle (See note 3.)
Data that can be
refreshed per CPU Unit
cycle (See note 3.)
Changing tag data link
parameters during
operation
Multicast packet filter
function (See note 6.)
CS1/CJ1
0.5 to 10,000 ms (in 0.5-ms units)
Can be set independently for each connection.
(Data is refreshed over the network at the preset
interval and does not depend on the number of
nodes.)
6000 pps (See note 1.)
Note Including the heartbeat.
256
CIO Area, DM Area, EM Area, Holding Area, Work Area, and network
symbols (See note 8.)
8 (7 tags when the tag set contains the PLC status)
184,832 words
252 words or 722 words (See note 2.)
Note Data synchronicity is maintained within
each connection.
256
(1 connection = 1 tag set)
722 words
(The PLC status uses 1 word when the tag set
contains the PLC status.)
Output/Transmission Output/Transmission
(CPU → EtherNet/IP): (CPU → EtherNet/IP):
19 256
Input/Reception Input/Reception
(EtherNet/IP → CPU): (EtherNet/IP → CPU):
20 (See note 4.) 256
Output/Transmission Output/Transmission
(CPU → EtherNet/IP): (CPU → EtherNet/IP):
7,405 words 6,432 words
Input/Reception Input/Reception
(EtherNet/IP → CPU): (EtherNet/IP → CPU):
7,405 words 6,432 words
Supported (See note 5.)
Supported
Section 2-1
CJ2H CJ2M
32
1 to 10,000 ms (in 0.5-
ms units)
Can be set indepen-
dently for each connec-
tion.
(Data is refreshed over
the network at the pre-
set interval and does
not depend on the
number of nodes.)
3000 pps (See note 1.)
Note Including the
heartbeat.
32
640 words
640 words (See
note 9.)
Note Data synchronic-
ity is maintained
within each con-
nection.
32
(1 connection = 1 tag
set)
640 words (See
note 9.)
(The PLC status uses 1
word when the tag set
contains the PLC sta-
tus.)
Output/Transmission
(CPU → EtherNet/IP):
32
Input/Reception
(EtherNet/IP → CPU):
32
Output/Transmission
(CPU → EtherNet/IP):
640 words
Input/Reception
(EtherNet/IP → CPU):
640 words
17