Manuals > Device Connection Guide > OMRON > Connection Procedure (RS-232C) > CVM1/CV Series (FINS)

overview

This is a setting example for connecting to the CVM series via RS-232C.

Model used

item	Model etc.
PLC	CVM1-CPU01-V2
Communication Unit	CPU Attached Port

Configuration environment

item	environment
OS	Windows7 Professional 64Bit
tool	CX-Programmer Ver9.51

Configuration details

item	setting	Setting items	Configuration Example
PLC side settings	Setting with switches and tools	Transmission speed	19200bps
		Byte Size	7bits
		Stop bits	2bits
		parity	Even (E)
		Unit No.	Unit 0
PC settings	Unit Settings	COMPort	Communication port number to connect to
		Transmission speed	19200bps
		Byte Size	7bits
		Stop bits	2bits
		parity	Even
	Folder and communication test settings	Unit No.	Unit 0
		Source Network Number	0
		Source Node	0
		Destination network number	0
		Destination Node	0

* Most of the settings on the computer will be adjusted to match the settings on the unit.

Unless you are connecting to a PLC on the network, set the Source Network Number/Source Node/Destination Network Number/Destination Node to all 0 (specific to CVM1/CV FINS RS-232C).

PLC side settings

Set up "CVM1". Settings are made using the front switch and CX-Developer etc.

1.Set the front switch as follows:

c_plc_0194

switch	explanation	Setting contents
Communication Channel	Communication path switching	Set to RS232
SW1	19200bps	ON
SW2	19200bps	OFF
SW3	Communication via "Host Link"	OFF
SW4	Communication via PC system settings	OFF
SW5	Do not transfer files	OFF
SW6	No termination resistor (RS-422 only)	OFF

When SW4 is turned ON, the host link default settings will be used (9600bps, unit number: 0, even parity, 7 bits, 2 stop bits). However, for CPU unit lot numbers prior to "**65", the settings will be 2400bps, 1 stop bit. Also, SW4 is only valid when SW3 is OFF.

When SW4 is turned OFF, the settings for the transmission speed, stop bit, parity, data length, and unit number are made in the "PC system settings." Changes to the PC system settings are made using a tool such as CX-Programmer (WS02-CXPC1-J).

2.Start CX-Programmer, connect online, and confirm that you can communicate with PLC.

3.Open the menu "PLC" - "PLC Information" - "PLC System Settings" to open the PLC System Settings screen.

4.Set "Top Link" as follows and close the dialog
c_plc_0195

item	Setting contents
Communication Settings	User Settings
Communication speed	19200
Parameters	7, 2, E
Unit No.	0

5.Select "PLC" - "Transfer" - "Transfer [PC → PLC]" and perform the transfer.
c_plc_0196

The default settings for CPU ports and peripherals are as follows. For details, please refer to the manual for your device.

COM port: The communication port number to connect to PLC

Transmission speed: 9600bps

Byte size: 7 bits

Stop bits: 2 bits

Parity: Even

Unit No.: Unit 0

PC settings

Use the Server application to connect to the PLC for which you have set up communications.

1.Right-click "Application" - "Driver" in the tree and select Add Driver.

2.Select the following units from the displayed driver list and add them:
c_plc_0197

3.Open the properties of the added unit (U01) and click Communication Settings.
c_plc_0198

4.Set "Communication Settings" as follows:
c_plc_0183

setting	Setting contents
COMPort	Communication port number to connect to
Transmission speed	19200
Byte Size	7bits
Stop bits	1bits
parity	Even

5.Open "Other Settings" and make sure it is checked.
c_plc_0184

6.USB-RS-If you are using a 232C conversion cable, the COM port may be locked in the event of a communication error, so check the reopen setting.
c_plc_0192

7.Perform a connection test to check the connection
c_plc_0199

If a message such as "Connection OK" is displayed, the connection is confirmed to be OK.

Connection example [CVM series]

Connection example [CVM series]