Filter
Top Products
135
Overview Section 6-1
Overall Structure
Note If only the message communications function is being used and the remote I/
O communications function is not being used, message communications are
possible even if the master function is disabled. In this case, it is not neces-
sary to register a scan list.
6-1-2 FINS Message Communications
Messages can be exchanged using FINS commands between DeviceNet
nodes (masters and/or slaves) that support FINS messages.
CPU Unit
CMND(490)
instruction
DeviceNet Unit
CMND(490)
instruction
(2801 Hex)
FINS message
FINS
Explicit message
FINS
message
function
Explicit
message
function
DeviceNet network
FINS message
Explicit message
OMRON special message communications
DeviceNet message communications
Type of FINS message Data send/receive FINS commands
Network
communications
instructions
SEND/RECV instructions CMND(490) instructions
PC to PC (both must be
CS/CJ-series PCs with a
CS/CJ-series DeviceNet
Unit) (See note 1.)
Note: Inter-network
communications is pos-
sible with other
DeviceNet networks,
Controller Link networks,
or other networks. (See
note 2.)
PC to OMRON Slave
Data length (excluding
command code)
SEND instruction: 267 words; RECV instruc-
tion: 269 words
542 bytes max.
CS/CJ-series PC CS/CJ-series P
CS/CJ-series PC CS/CJ-series PC
Command
CS/CJ-series PC
Command
Command to
Master Unit
Command to
CPU Unit
CS/CJ-series PC
Slave
CS/CJ-series PC
Command
Slave