8-7
8 CIP Message Communications
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
8-2 CIP Messaging Communications Client Function
8
8-2-4 Route Path
The route path indicates the path from the local CPU Unit to the remote Controller on the network.
Routing is performed for CIP communications instructions based on route paths.
The EPATH data type is used to give route paths. The basic format is shown below.
Network_type_number \Remote_address
NX701 CPU Unit
Two internal CPU Units are provided (each with a unique unit address) to control the two built-in Eth-
erNet/IP ports.
• For built-in EtherNet/IP port 1: CPU Unit with a unit address of 00 hex (CPU #00)
• For built-in EtherNet/IP port 2: CPU Unit with a unit address of 01 hex (CPU #01)
In the route path of the CIP communication instruction (RoutePath in-out variable), add entries that
recognize the above two CPU Units (CPU#00 and CPU#01) before sending the CIP communication
instruction.
Route path when sending a CIP communication instruction
• When issuing a CIP communication instruction, issue from CPU #00. (a)
• To output from built-in EtherNet/IP port 2, output from CPU #00 via CPU #01. (b) to (c)
8-2-4 Route Path
Route Path Notation
Route
Route
notation
Content entered in route path
Network type number
(hexadecimal)
Destination address
(hexadecimal)
Output from built-in
EtherNet/IP port 1
(a) #02 (communications port) IP address
Output from built-in
EtherNet/IP port 2
(b) #01 (backplane port) #01(unit address of CPU Unit)
(CPU #01 for built-in EtherNet/IP
port 2 communication)
(c) #02 (communications port) IP address
NX-series CPU Unit NX-series CPU Unit
Backplane
port (#01)
Built-in EtherNet/IP
port 1
Built-in EtherNet/IP
port 2
IP address :
192.168.250.2
IP address :
192.168.251.2
(a)
(b)
(c)
CPU#00
(Unit address 00 hex)
CPU#01
(Unit address 01 hex)
( * )
Communications
port (#02)
Communications
port (#02)
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