Omron CS1G/H-CPUxx-EV1 Programming Manual page 332

Serial Communications
System Configuration Patterns
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)
FINS header
Ethernet
CPU Unit with unit version 3.0 or later
Protocol
conversion
Note When the NS-series PT is connected serially to the PLC using
serial communications mode (1:N NT Links), and the NS-series
PT sends FINS commands 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 transfers the command to the CPU Unit's serial
port. The CPU Unit uses the Serial Gateway to convert the com-
mand into the specified protocol. This operation enables serially
connected devices to access the CPU Unit's serial port from
Smart Active Parts using an NS-series PT.
Note
296
The CPU Unit converts the FINS messages to CompoWay/F protocol for
sending in this operation.
CompoWay/F
2803
command
CompoWay/F
command
RS-485 (CompoWay/F)
CompoWay/F-compatible
OMRON component
1. The FINS header contains the following information.
• Remote destination network address (DNA)
• With routing tables that treat serial communications path as a network:
Network address corresponding to serial port in the routing tables.
• Without routing tables that treat serial communications path as a net-
work: Network address for specifying actual remote PLC.
• Remote destination node address (DA1)
• With routing tables that treat serial communications path as a network:
00 hex (local PLC's internal communications)
• Without routing tables that treat serial communications path as a net-
work: Node address for specifying actual remote PLC
• Remote destination unit address (DA2)
Unit address of serial port
CPU Unit
Details
Access via serial com-
munications using
CompoWay/F is possi-
ble from a PT con-
nected to the network
by executing a Smart
Active Part that is con-
nected serially, which
automatically sends an
internal FINS com-
mand.
Peripheral port
RS-232C port
Section 6-3
Routing tables to
treat serial
communications path
as network
Optional