Outline - Omron K6CM User Manual

9 Monitoring and Setting Using the Modbus TCP Devices
9-1

Outline

This section provides an overview of how to monitor the K6CM using the Modbus TCP.
Modbus TCP is a communications protocol that uses TCP/IP to communicate with host devices such as
PLCs.
This communications protocol allows host devices with a TCP/IP socket interface to read and write the
internal data of the K6CM.
Host device (client)
with TCP/IP socket
interface
Host device
Client
Note The socket is an interface for using TCP directly from the user program.
The host device specifies the IP address of K6CM and TCP port number of 502 (01F6 hex) and opens the
socket in Active. After that, it sends Modbus TCP request and reads and writes the internal data of the
K6CM.
In addition, Modbus TCP can be connected to up to two clients simultaneously.
9 - 2
Specify the IP address of the K6CM, and the TCP port number
502, and send a request to open the TCP/IP connection.
Receives the request.
Sends a Modbus TCP request.
Returns the response.
Requests to close the TCP/IP connection.
Receives the request.
Request
Response
K6CM (server)
K6CM Motor Condition Monitoring Device User's Manual (N219)
K6CM server