Omron NV3W Connection Manual page 134

Modbus (RTU Mode | Temperature Controller)
Communications Settings
112
The following communications settings are recommended for the PT and
Temperature Controller.
■
PT Communications Settings
Item
PLC station number
Baud rate
Data length
Stop bits
Parity
Transmission delay
Note When connecting to OMRON EJ1 Temperature Controllers using Modbus-
RTU, set a transmission delay of at least 5 ms in the communications parame-
ters in the NV Configuration of the PT. Communications may not be performed
correctly if a transmission delay of 4 ms or less is set. Use a value of the least
5 ms (default) for the port B send wait time in the EJ1. Communications may
not be performed correctly if a send wait time of 4 ms or less is set.
■
Temperature Controller Communications Settings
Item
Slave address
Mode
Baud rate
Data length
Stop bits
Parity
Note Using PLCs from Other Manufacturers
Always confirm operation on the actual PLC that you intend to use.
For the NV Configuration when connected to an EJ1 Temperature Controller,
refer to the information on connecting to the EJ1 with Modbus-RTU in the NV-
series Setup Manual (Cat. No. V103).
Setting
1
19,200 bps
8
1
Odd or Even
5 ms
Setting
1
RTU mode
19,200 bps
8
1
Odd or Even
Section 10-3
Comments
When specifying connections to
more than one PLC, make the set-
tings for each device.
Always 1 bit.
For RS-232C communications,
0 ms can also be set. Set the
delay according to the device.
Comments