Publication 1766-RM001A-EN-P - October 2008
464
Communications Instructions
Note 1: Everywhere there is a question mark, this box is filled in by the user.
Note 2: Everywhere there is a value, that box also has user edits disabled.
Note 3: All other fields not mentioned here are unaffected by the Service Type.
In this example, a Get Attribute Single message reads a single attribute
value. The Class Code 0xF5 indicates TCP/IP Interface Object. The TCP/IP
Interface Object provides an attribute that identifies the link-specific
object for the associated physical communications interface. Each device
shall support exactly one instance of the TCP/IP Interface Object for each
TCP/IP capable communications interface on the module. A request to
access instance 1 of the TCP/IP Interface Object shall always refer to the
instance associated with the interface over which the request was
received.
The attribute ID 5 identifies TCP/IP network interface configuration
parameters (consist of IP address, network mask, gateway address, DNS
name)
The controller reads 30 elements for a single attribute value from the
ControlLogix controller. The 30 bytes are placed in the controller's integer
file starting at word N7:0
Service Type Pull-Down List
Auto-Fill fields
Service
Service Code
Class
Instance
Attribute
Custom
?
?
?
?
Read Assembly
0x0E
0x04
?
3
Write Assembly
0x10
0x04
?
3
Read Output Point
0x0E
0x10
?
3
Write Output Point
0x10
0x09
?
3
Read Input point
0x0E
0x08
?
3
Read Parameter
0x0E
0x0F
?
1
Write Parameter
0x10
0x0F
?
1
Read Analog Input
0x0E
0x0A
?
3
Write Analog Output
0x10
0x0B
?
3
Generic Get Attribute
Single
0x0E
?
?
?
Generic Set Attribute
Single
0x10
?
?
?
Generic Get Member
0x18
?
?
?
Generic Set Member
0x19
?
?
?
Reset Identity Object
0x05
0x01
?
N/A
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