1-3 communications specifications, Communications specifications – Omron SYSMAC CJ1W-EIP21 User Manual

Page 43

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17

EtherNet/IP Unit and Built-in EtherNet/IP Port Specifications

Section 2-1

2-1-3

Communications Specifications

Item

CS1/CJ1

CJ2H

CJ2M

CIP
service

Tag data
links
(Cyclic
communi-
cations)

Number of connections 256

32

Packet interval (refresh
cycle)

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.)

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.)

Allowed communica-
tions bandwidth per
Unit

6000 pps (See note 1.)

Note Including the heartbeat.

3000 pps (See note 1.)

Note Including the

heartbeat.

Number of tags that
can be registered

256

32

Tag types

CIO Area, DM Area, EM Area, Holding Area, Work Area, and network
symbols (See note 8.)

Number of tags per
connection (= 1 tag
set)

8 (7 tags when the tag set contains the PLC status)

Maximum link data size
per node

184,832 words

640 words

Maximum data size per
connection

252 words or 722 words (See note 2.)

Note Data synchronicity is maintained within

each connection.

20 words

Note Data synchronic-

ity is maintained
within each con-
nection.

Number of registrable
tag sets

256
(1 connection = 1 tag set)

32
(1 connection = 1 tag
set)

Maximum size of 1 tag
set

722 words
(The PLC status uses 1 word when the tag set
contains the PLC status.)

20 words
(The PLC status uses 1
word when the tag set
contains the PLC sta-
tus.)

Maximum number of
tags that can be
refreshed per CPU Unit
cycle (See note 3.)

Output/Transmission
(CPU

EtherNet/IP):

19

Input/Reception
(EtherNet/IP

CPU):

20 (See note 4.)

Output/Transmission
(CPU

EtherNet/IP):

256

Input/Reception
(EtherNet/IP

CPU):

256

Output/Transmission
(CPU

EtherNet/IP):

32

Input/Reception
(EtherNet/IP

CPU):

32

Data that can be
refreshed per CPU Unit
cycle (See note 3.)

Output/Transmission
(CPU

EtherNet/IP):

7,405 words

Input/Reception
(EtherNet/IP

CPU):

7,405 words

Output/Transmission
(CPU

EtherNet/IP):

6,432 words

Input/Reception
(EtherNet/IP

CPU):

6,432 words

Output/Transmission
(CPU

EtherNet/IP):

640 words

Input/Reception
(EtherNet/IP

CPU):

640 words

Changing tag data link
parameters during
operation

Supported (See note 5.)

Multicast packet filter
function (See note 6.)

Supported

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