Omron CJ - REFERENCE MANUAL 07-2009 User Manual

71
Serial Gateway Overview Section 3-6
System Configuration Patterns
Sending FINS Messages Using CMND(490) in CPU Unit’s Ladder Program
The Board/Unit converts the FINS messages to Modbus-RTU protocol for
sending in this operation.
Access from CPU Unit (on the Same PC)
Access from CPU Unit (on Network PC)
CPU Bus-to-Serial Details Routing tables to treat serial
communications path as network
OMRON Inverters connected serially to
the Serial Communications Board/Unit
using Modbus-RTU can be accessed from
a CPU Unit in the same PC.
Optional
2804
Serial Communications Unit/Board
CPU Unit
FINS header
CMND(490)
FINS message
RS-485 (Modbus-RTU)
Protocol
conversion
Modbus-RTU
command
Modbus-RTU
command
Modbus-RTU
Slave device
(e.g, OMRON
Inverter)
FINS message-to-Serial Details Routing tables to treat serial
communications path as network
OMRON Inverters connected serially to
the Serial Communications Board/Unit
using Modbus-RTU can be accessed from
a CPU Unit in a PC connected to the net-
work.
Optional
2804
CMND(490)
FINS header
CPU Unit
Serial Communications Unit/Board
RS-485 (Modbus-RTU)
FINS message
Modbus-RTU
command
Modbus-RTU
command
Protocol
conversion
Network (Ethernet,
Controller Link,
DeviceNet)
Modbus-RTU
Slave device
(e.g, OMRON
Inverter)

Omron CJ - REFERENCE MANUAL 07-2009 Specifications

General

Brand	Omron
Model	CJ - REFERENCE MANUAL 07-2009
Category	Computer Hardware
Language	English