Omron DeviceNet CV Series Operation Manual page 189

CQM1 I/O Link Unit
Node Address Settings
Note
Baud Rate Setting
Note
Setting Pins 9 and 10
172
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Each Slave's node address is set with pins 1 through 6 of the Slave's DIP
switch. Any node address within the setting range can be used as long as it
isn't already set on another node.
DIP switch setting
Pin 6 Pin 5 Pin 4 Pin 3
0 0 0 0
0 0 0 0
0 0 0 0
:
:
1 1 1 1
1 1 1 1
1 1 1 1
0: OFF, 1: ON
1. Refer to Appendix A Node Address Settings Table for a complete table of
DIP switch settings.
2. The Slave won't be able to participate in communications if the same node
address is used for the Master or another Slave node (node address dupli-
cation error).
Pins 7 and 8 are used to set the baud rate as shown in the following table.
(These pins are factory-set to OFF.)
Pin 7 Pin 8
OFF OFF
ON OFF
OFF ON
ON ON
1. Always turn OFF the Slave's power supply (including the communications
power supply) before changing the baud rate setting.
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. Furthermore, a node with an incor-
rect baud rate may cause communications errors between nodes with cor-
rect baud rate settings.
The functions of pins 9 and 10 differ for inputs and outputs, as shown in the
Input:
Output:
Reserved: Always OFF
following diagram.
Pin 9: Reserved (Always OFF)
Pin 10: As follows:
Inputs: No function (Always OFF)
Outputs: Hold/Clear outputs for communications error
OFF (Clear): All output data from the Master will be cleared to 0 when a
communications error occurs.
ON (Hold): All output data from the Master will be retained when a
communications error occurs.
Pins 9 and 10 are factory-set to OFF.
Node address
Pin 2 Pin 1
0 0 0 (default)
0 1 1
1 0 2
:
:
0 1 61
1 0 62
1 1 63
Baud rate
125 kbps (default)
250 kbps
500 kbps
Not allowed.
Not used (Always OFF)
Hold/Clear outputs for communications error
Section 4-10