Omron SYSMAC CJ1W-EIP21, Operation Manuals

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8 Message Communications
8-38
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
(2) Software Switch Details

Service Codes
Specify the service to execute with the service code.

Request Paths (IOIs) to Specify Objects
When you specify an object, specify the request path (IOI) for each service code as given below.
Bit Name Description
0 Auto-negotiate FALSE: Auto-negotiation is disabled (communications setup is always set to 10 Mbps).
TRUE: Auto-negotiation is enabled (communications setup is automatically set to 100
or 10 Mbps).
1 ForcedDuplex Mode FALSE: Half duplex
TRUE: Full duplex
* When auto-negotiation is enabled (bit 0 is TRUE), this should always be FALSE.
2 to 16 Reserved Always FALSE
Service
code
Parameter name Description
Supported services
Classes Instances
0E hex Get_Attribute_Single Reads the value of the specified attribute. Supported. Supported.
10 hex Set_Attribute_Single Writes a value to the specified attribute. Supported. Supported.
4C hex Get_and_Clear Specify Attribute4 or Attribute5 to reset the value of the attribute to 0. Not sup-
ported.
Supported.
Service code Class ID Instance ID Attribute ID
0E hex Get_Attribute_Single F6 hex • Specifying a service for a class: 00 hex
• Specifying a service for an instance:
Always 01 hex
Not required.
10 hex Set_Attribute_Single • Reading a class attribute: 01 or 02
hex
• Reading and writing an instance
attribute: 01 to 06 hex
4C hex Get_and_Clear Specify an attribute to reset its value
to 0: 01 to 05 hex