Write Multiple Registers; Read/Write Multiple Registers; Read Device Identification - Anybus CompactCom 40 Modbus-TCP Network Manual

Modbus-TCP Functions
5.8

Write Multiple Registers

Function Code:
Register Type:
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:
Register Type:
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:
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
p. 41. If this object is not implemented, the default identification strings will be returned
®
Anybus CompactCom ™ 40 Modbus-TCP
16
4x (Holding Registers)
23
4x (Holding Registers)
43 (subcode 14)
-
®
Transparent Ethernet Network Guide
19 (70)
Modbus Host Object (FAh),
SCM-1202-022 1.1