Omron NSJ CONTROLLERS - 03-2008 Operation Manual page 110

Nomenclature and Functions
DeviceNet DIP Switch
Note
The DeviceNet DIP switch is used to set the baud rate, whether remote I/O
communications will be continued or stopped when a communications error
occurs, and whether to hold or clear the remote outputs when a communica-
tions error occurs in the slave function.
Hold/clear I/O for communications error (when used as a slave)
Continue/stop remote I/O communications for communications
error (when used as a master)
Baud rate
The settings of the DIP switch pins are shown in the following table. All pins
are set to OFF at the factory.
Pin
1 Baud rate
2
3 Continue/stop remote I/O communica-
tions for communication errors (when
used as a master)
4 Hold/clear remote outputs for commu-
nications error (when used as a slave)
Baud Rate
Pins 1 and 2 are used to set the baud rate as shown in the following table.
Pin 1 Pin 2
OFF OFF 125 kbps
ON OFF 250 kbps
OFF ON 500 kbps
ON ON Not allowed.
1. Always turn OFF the NSJ Controller before changing the DIP switch set-
tings.
2. Set the same baud rate on all of the nodes (master and slaves) in the Net-
work. Any slaves with baud rates different from the master's rate won't be
able to participate in communications and may cause a communications
error between nodes that have been set properly.
Continue/Stop Remote I/O Communications
When the DeviceNet Section is used as a master, pin 3 is used to set whether
or not communications will stop after a communications error.
If pin 3 is ON, remote I/O communications will be stopped if one of the follow-
ing errors occurs.
Remote I/O Communications Error Flag (n+12, bit 02 is ON, See note.)
Send Timeout Flag (n+10, bit 08 is ON)
Network Power Error Flag (n+10, bit 07 is ON)
Remote I/O communications will remain stopped even if the error is cleared.
(Message communications and slave functions will continue.) To resume com-
munications, turn ON the Remote I/O Communications Start Bit (word n, bit
02) of Software Switches 1. Refer to 3-2 Allocated CIO Area Words in the CS/
CJ-series DeviceNet Unit Operation Manual for details.
Note The 7-segment display will show "A0" when remote I/O communications stop.
If pin 3 is OFF, remote I/O communications will stop if a send timeout or net-
work power error occurs, but will restart automatically when the cause of the
error is cleared.
Function
See the next table.
OFF:
ON:
OFF:
ON:
Baud rate
Section 4-1
Setting
Continue communications
Stop communications
Clear remote outputs
Hold remote outputs
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