Appendix 4 Details Of Message Communication Support Command - Mitsubishi Electric MELSEC iQ-R Series User Manual

Appendix 4
This section describes the commands used during Class3 message communications and UCMM message communications.
Object list
The following table lists the objects that can be used with message communication support commands.
Object
Identity
Connection Manager
TCP/IP Interface
Ethernet Link
Command explanations
Item
Class attribute
Class service
Instance attribute
Instance service
*1 A class possesses the basic information such as the revision and instance of the object.
*2 An instance possesses the information of each object such as its functions and data.
■Access
This item indicates whether reading and writing using instance services are allowed.
• Get: Reading is possible with services such as Get_Attribute_Single.
• Set: Writing is possible with services such as Set_Attribute_Single.
■Data type
Item
BOOL
SINT
INT
DINT
USINT
UINT
UDINT
ULINT
REAL
LREAL
STRING
BYTE
WORD
DWORD
Padded EPATH
■Setting value (Set)/stored value (Get)
When "Get" access is available, the setting value (Set)/stored value (Get) can be read from the RJ71EIP91.
When "Set" access is available, the setting value (Set)/stored value (Get) can be set on the RJ71EIP91.
Details of Message Communication
Support Command
Description
Holds information such as the identification information of the EtherNet/IP module.
Used when establishing a connection with an EtherNet/IP module.
Holds the settings and status related to TCP/IP.
Holds the settings and status related to Ethernet communication.
Description
Data possessed by the class of an object.
Service performed by specifying a class.
Data possessed by the instance of an object.
Service performed by specifying an instance.
Description Data size
Bit data 1 byte
Signed 8-bit data 1 byte
Signed 16-bit data 2 bytes
Signed 32-bit data 4 bytes
Unsigned 8-bit data 1 byte
Unsigned 16-bit data 2 bytes
Unsigned 32-bit data 4 bytes
Unsigned 64-bit data 8 bytes
Single-precision floating 4 bytes
point real number
Double-precision floating 8 bytes
point real number
Character string data Depends on the
number of
characters.
Bit string (8 bits) 1 byte
Bit string (16 bits) 2 bytes
Bit string (32 bits) 4 bytes
CIP path segment 4 bytes

Appendix 4 Details of Message Communication Support Command

*1
*1
*2
*2
Range
• 0: Off (False)
• 1: On (True)
-128 to 127
-32768 to 32767
-2147483648 to 2147483647
0 to 255
0 to 65535
0 to 4294967295
0 to 18446744073709551615
E ± 1.17549435 - 38 to E ± 3.40282347 + 38
E ± 2.2250738585072014 - 308 to E ± 1.7976931348623157 +
308
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Reference
Page 158 Identity
Page 160 Connection Manager
Page 161 TCP/IP Interface
Page 164 Ethernet Link
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