Anybus CompactCom 40 Modbus-TCP, Сетевое руководство, Страница: 21 / 72

Modbus-TCP Functions 19 (70)
5.8 Write Multiple Registers
Function Code: 16
Register Type: 4x (Holding Registers)
Details
Mapped to Read- and Write Process Data, ADIs and configuration registers.
ADIs must be written as a whole, but the Process Data area accepts writes of any size.
5.9 Read/Write Multiple Registers
Function Code: 23
Register Type: 4x (Holding Registers)
Details
Mapped to Read- and Write Process Data, ADIs and configuration registers.
ADIs must be written as a whole, but the Process Data area accepts writes of any size.
It is allowed to read parts of larger data types, and to read multiple ADIs using a single request.
The write operation is performed before the read. If there is an overlap in the read and write
ranges, the newly written data will be returned by the read operation.
5.10 Read Device Identification
Function Code: 43 (subcode 14)
Register Type:
-
Details
Basic and regular device identification objects are supported according to the Modbus specifi-
cation. Extended device identification objects are not supported.
Identification strings are extracted from the host application via the Modbus Host Object (FAh),
p. 41 . If this object is not implemented, the default identification strings will be returned
Anybus ® CompactCom ™ 40 Modbus-TCP ® Transparent Ethernet Network Guide SCM-1202-022 1.1