Mitsubishi Electric MELSEC iQ-RJ71EIP91 - Appendix 4 Details of Message Communication Support Command

APPX
Appendix 4 Details of Message Communication Support Command
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Appendix 4 Details of Message Communication
Support Command
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.
Command explanations
*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
■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.
Object Description Reference
Identity Holds information such as the identification information of the EtherNet/IP module. Page 158 Identity
Connection Manager Used when establishing a connection with an EtherNet/IP module. Page 160 Connection Manager
TCP/IP Interface Holds the settings and status related to TCP/IP. Page 161 TCP/IP Interface
Ethernet Link Holds the settings and status related to Ethernet communication. Page 164 Ethernet Link
Item Description
Class attribute Data possessed by the class of an object.
*1
Class service Service performed by specifying a class.
*1
Instance attribute Data possessed by the instance of an object.
*2
Instance service Service performed by specifying an instance.
*2
Item Description Data size Range
BOOL Bit data 1 byte • 0: Off (False)
• 1: On (True)
SINT Signed 8-bit data 1 byte -128 to 127
INT Signed 16-bit data 2 bytes -32768 to 32767
DINT Signed 32-bit data 4 bytes -2147483648 to 2147483647
USINT Unsigned 8-bit data 1 byte 0 to 255
UINT Unsigned 16-bit data 2 bytes 0 to 65535
UDINT Unsigned 32-bit data 4 bytes 0 to 4294967295
ULINT Unsigned 64-bit data 8 bytes 0 to 18446744073709551615
REAL Single-precision floating
point real number
4 bytes E ± 1.17549435 - 38 to E ± 3.40282347 + 38
LREAL Double-precision floating
point real number
8 bytes E ± 2.2250738585072014 - 308 to E ± 1.7976931348623157 +
308
STRING Character string data Depends on the
number of
characters.

BYTE Bit string (8 bits) 1 byte 
WORD Bit string (16 bits) 2 bytes 
DWORD Bit string (32 bits) 4 bytes 
Padded EPATH CIP path segment 4 bytes 