Omron SYSMAC CJ1W-EIP21, Operation Manuals

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1-7
1 Introduction
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
1-3 E
therNet/IP
Un
it
1
1
-3-1
S
p
ecifications
1-3 EtherNet/IP Unit
1-3-1 Specifications
Item Specifications
Product EtherNet/IP Unit
Unit classification CPU Bus Unit
Mounting location CPU Rack or Expansion Rack
Number of mountable Units 4 max.
Communications protocol TCP/IP or UDP/IP
Supported services
Sysmac Studio connection, tag data link, CIP message com-
munications, FTP server, automatic clock adjustment (SNTP
client), SNMP agent, DNS client, and BOOTP client
Physical layer
100Base-TX or 10Base-T (100Base-TX is recommended.)
*1
Transmission
specifications
Media access method CSMA/CD
Modulation Baseband
Transmission paths Star form
Baud rate 100 Mbps (100Base-TX)
Transmission media Shielded twisted-pair (STP) cable, Category 5, 5e, or higher
Transmission distance 100 m max. (distance between hub and node)
Number of cascade connections There is no limitation when an Ethernet switch is used.
CIP service: Tag
data links (cyclic
communications)
Number of connections 256
Packet interval (refresh cycle)
0.5 to 10,000 ms in 0.5-ms increments
Packet intervals can be set independently for each connec-
tion. (Data is refreshed over the network at the preset interval
and does not depend on the number of nodes.)
Allowed communications bandwidth
per Unit
6,000 pps
*2
This includes the heartbeat.
Number of registrable tags 256
Tag types
Network variables
CIO, Work, Holding, DM, or EM Area
Number of tags per connection (= 1
tag set) 8 (7 tags when the tag set contains the Controller status)
Maximum link data size per node 369,664 bytes
Maximum data size per connection
1,444 bytes
*3
Note Data concurrency is maintained within each connec-
tion. Refer to 7-1-7 Concurrency of Tag Data Link Data
for methods to maintain concurrency.
Number of registrable tag sets 256 (1 connection = 1 tag set)
Maximum size of 1 tag set
722 words (The Controller status uses 1 word when the tag
set contains the Controller status.)
Changing tag data link parameters
when Controller is in RUN mode
Supported
*4
Multi-cast packet filter
*5 Supported
CIP message ser-
vice: Explicit
messages
*6
Class 3 (connected) Number of connections: 128 (c servers)
UCMM (unconnected)
Number of clients that can communicate at one time: 32 max.
Number of servers that can communicate at one time: 32
max.
CIP routing
*7
Supported.
CIP routing is supported for the following remote Units:
NJ501-
@@@@ , NJ301- @@@@ , CS1W-EIP21, CJ1W-EIP21,
CJ2H-CPU @@ -EIP, and CJ2M-CPU3 @ .