Omron CJ - REFERENCE MANUAL 07-2009 Reference Manual page 91

Serial Gateway Overview
FINS message-to-Serial
FINS message
CompoWay/F
2803
FINS header
command
Serial Communications Unit/Board
Network (Ethernet, Controller
CPU Unit
Link, DeviceNet)
Protocol
conversion
CompoWay/F
command
RS-485 (CompoWay/F)
CompoWay/F-compatible
OMRON component
Executing Smart Active Parts Using an NS-series PT (Sending Internal FINS Messages)
Access from PT on Ethernet or
serial NT Link
NS-series PT
Smart Active Part
FINS message (sent internally)
CompoWay/F
FINS header 2803
command
Ethernet
CPU Unit or Serial Communications Unit/Board
CPU Unit
Protocol
conversion
CompoWay/F
command
CompoWay/F-compatible
OMRON component
Note When the NS-series PT is con-
nected serially to the PC using
serial communications mode
(1:N NT Links), and the NS-
series PT sends FINS com-
mands encapsulated in NT Link
commands using Smart Active
Parts, the CPU Unit removes the
NT Link header, etc. from the
received command, converting it
to a FINS command, and trans-
fers the command to the Serial
Communications Board/Unit.
The Serial Communications
Board/Unit uses the Serial Gate-
way to convert the command into
the specified protocol. This oper-
ation enables serially connected
devices to access the Serial
Communications Board/Unit
from Smart Active Parts using an
NS-series PT.
Access from CPU Unit (PC on the Network)
OMRON components connected serially
CMND(490)
to the Serial Communications Board/Unit
using CompoWay/F can be accessed from
a CPU Unit in a PC connected to the net-
work.
The Board/Unit converts the FINS messages to CompoWay/F protocol for
sending in this operation.
Access via serial communications using
CompoWay/F is possible from a PT con-
nected to the network by executing a
Smart Active Part that is connected seri-
ally, which automatically sends an internal
FINS command.
RS-485 (CompoWay/F)
Note (1) The FINS header contains the following information.
• Remote destination network address (DNA)
Details
Details
Section 3-6
Routing tables to treat serial
communications path as network
Optional
Routing tables to treat serial
communications path as network
Optional
69