Modbus Tcp Data Exchange - Delta AH500 Hardware Operation Manual

A H 5 0 0 H a r d w a r e a n d O p e r a t i o n M a n u a l
11.3.2

Modbus TCP Data Exchange

Modbus TCP Data Exchange
11.3.2.1
Data exchange between electronic devices can be achieved via Modbus TCP protocol. Through Modbus TCP
protocol, users can exchange data among Delta devices and any 3
the Modbus TCP standard. A chart showing information concerning Modbus TCP data exchange is provided
below.
Communication mode
Maximum number of
*1
connections
Communication protocol
Maximum quantity of data
which can be read/written
Supported devices
Supported models
*1. The maximum number of connections is equal to the number of Modbus TCP data exchange blocks plus the
number of Ether Link data exchange blocks. The number of Ether Link data exchange blocks in a PLC is the
number of nodes of which the PLC demands data, and the nodes to which the PLC provides data are not counted.
11.3.2.2 Modbus TCP Data Exchange - PLC Parameter Setting
Double-click HWCONFIG, and then double-click CPU. After CPU is double-clicked, the PLC Parameter
Setting window will be opened.
11 - 6 6
Modbus TCP
AHCPU500-EN, AHCPU501-EN
AHCPU510-EN, AHCPU511-EN
AHCPU520-EN, AHCPU521-EN,
AHCPU521-DNP
AHCPU530-EN, AHCPU531-EN
Standard Modbus TCP/IP and AH communication protocol
AH500 series
CPU module
DVP series PLCs
Remote terminal unit
Others
AH500 series
CPU module
Remote terminal unit DVP series PLCs
Others
AHCPU500-EN, AHCPU510-EN, AHCPU520-EN, AHCPU530-EN,
AHCPU501-EN, AHCPU511-EN, AHCPU521-EN, AHCPU531-EN,
AHCPU521-DNP
rd
party devices, as long as they comply with
16
32
64
128
400 words
6400 bits
100 words
100 bits
100 words
100 bits
X, Y, M, SM, SR, D, T, C,
S, E
X, Y, M, D
Logical address
0x0000~0xFFFF