Delta AH500 series, Hardware Operation Manual, Page: 509 / 681

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 - 6 0
11.3 Data Exchange Function
AH500 series can exchange data with another Ethernet PLC not only by means of instructions, but also by a
table interface.
AH500 Basic CPU modules (AHCPU5x0-EN Series) can exchange data via Modbus TCP and AH500
Advanced CPU modules (AHCPU5x1 Series and AHCPU560-EN) can exchange data via Modbus TCP and
Modbus.
11.3.1 Modbus Data Exchange
11.3.1.1 Modbus Data Exchange
Data exchange between electronic devices can be achieved via Modbus protocol. Through Modbus protocol,
users can exchange data among Delta devices and any 3
rd
party devices, as long as they comply with the
Modbus standard. A chart showing information concerning Modbus data exchange is provided below.
Communication mode Modbus
Maximum number of
connections
32
Communication protocol Standard Modbus and AH500 communication protocol
Maximum quantity of data
which can be read/written
Remote terminal unit
AH500 series
CPU module 400 words
6400 bits
DVP series PLCs 100 words
100 bits
Others 100 words
100 bits
Supported devices Remote terminal unit
AH500 series
CPU module X, Y, M, SM, SR, D, T, C,
S, E
DVP series PLCs X, Y, M, D
Others
Logical address
0x0000~0xFFFF
Supported models AH500 advanced CPU modules (AHCPU501/511/521/531)
11.3.1.2 Modbus 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.