NX-CSG/SL5/SI/SO
7
Built-in EtherNet/IP Port Specifications
The following table shows the specifications of the built-in EtherNet/IP port of the Communication Control Unit.
*1. If tag data links are being used, use 100Base-TX.
*2. Here, pps means “packets per second” and indicates the number of packets that can be processed in one second.
*3. To use a data size of 505 bytes or higher, the system must support a large forward open (an optional CIP specification).
The CS, CJ, NJ, and NX-series Units support a large forward open, but before connecting to nodes of other companies, confirm that those
devices also support it.
*4. If more than 40 tag sets are registered in total, the Tag Data Link, Too Many Tag Sets Registered (840E0000 hex) event will occur.
*5. Because the built-in EtherNet/IP port is equipped with an IGMP client (version 2), unnecessary multicast packets can be filtered out by an
Ethernet switch that supports IGMP Snooping.
Item
Specification
NX-CSG-
Unit version 1.00 or higher
Communications protocol TCP/IP or UDP/IP
Supported services
Sysmac Studio connection, tag data links, CIP message communications, FTP server,
automatic clock adjustment (NTP client), SNMP (agent), DNS (client), BOOTP (client), TCP/
UDP message service
Number of logical ports 2 (With IP routing function)
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
The built-in switching ports support up to 50 nodes.
There is no limitation when an external Ethernet switch is used.
CIP Safety routing
Maximum number of routable
CIP Safety connections
254
Maximum routable Safety data
length per connection
32 bytes
CIP service:
Tag data links
(cyclic communications)
Number of connections
32/Logical ports
(total of 64 with two logical ports)
Packet interval
(refresh cycle)
1 to 10,000 ms in 1-ms increments
Packet intervals can be set independently for each connection. (Data is refreshed over the
network at preset intervals and does not depend on the number of nodes.)
Allowed communications
bandwidth per Unit
12,000 pps *2
Note: The heartbeat and CIP Safety routing are included.
Number of registrable tags
1024/Logical ports
(total of 2048 with two logical ports)
Tag types Network variables
Number of tags per connection
(=1 tag set)
32 (31 tags if Controller status is included in the tag set.)
Maximum link data size per node
46,208 bytes/Logical ports
92,416 bytes total
Maximum data size per connection 1,444 bytes *3
Number of registrable tag sets
Data concurrency is maintained within each connection.
32 per port
(1 connection = 1 tag set)
(total of 40 with two logical ports) *4
Maximum size of 1 tag set
1,444 bytes
(Two bytes are used if Controller status is included in the tag set.)
Multi-cast packet filter *5 Supported.
CIP message service:
Explicit messages *6
Class 3
(number of connections)
Connections: 16/Logical ports
(total of 32 with two logical ports)
(server only)
UCMM
(unconnected)
Maximum number of clients that can communicate at one time: 16 per port
(total of 32 with two logical ports)
Maximum number of servers that can communicate at one time: 16 per port
(total of 32 with two logical ports)
TCP/UDP message
service
Maximum number of clients that
can communicate at one time
16 per port (total of 32 with two logical ports)
Maximum message size
Request: 492 bytes
Response: 496 bytes
SNMP
Agent SNMPv1, SNMPv2c
MIB MIB-II
EtherNet/IP conformance test Conforms to CT14
Ethernet interface
10BASE-T or 100BASE-TX
Auto negotiation or fixed settings
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