Delta AH500 Hardware Operation Manual page 457

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
Column
The data exchange groups in the data exchange table in the PLC Link Table
Serial
Editor window are numbered. Users can set 16 data exchange groups or 32
Number (#)
data exchange groups, depending on the model selected.
The slave station address which belongs to a data exchange group is
Station indicated. A station address can belong to several data exchange group.
Addr. Besides, the station address 0 represents an undefined slave station, and is
not a broadcast station address.
R: The master station reads the data in devices in a slave station.
R/W
W: The master station writes data into devices in a slave station.
Master
The range of devices which are used in the master station is indicated.
Device Data
<=: The master station reads the data in devices in a slave station.
<=>
=>: The master station writes data into devices in a slave station.
The devices which are used in a slave station are indicated. If a slave station
Slave Device
is a user-defined Modbus device, the devices used will be represented by
Data
hexadecimal addresses.
Length A data length is indicated. A length indicates the number of devices used.
Users can decide whether to involve a data exchange group in data
exchange. If a data exchange group is set incorrectly, the data exchange
Status
group will not be involved in data exchange. If a data exchange group is not
involved in data exchange, the related data will be on a gray ground.
The device types shown are consistent with the device names shown in the
working area in NWCONFIG. If a slave station address is assigned to a
Device Type network module, the name of the PLC to which the network module is
connected will be shown. Besides, if a slave station is undefined, it is
unknown.
The figure below is an example of a data exchange table. Group #1, group #2, group #4, and group #5 are
involved in data exchange. Please refer to the table below for more information.
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Description