Delta AS06XA-A - 11.4 Master;Slave Mode

Chapter 11 DeviceNet Master Scanner Module AS01DNET-A
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11.4 Master /Slave Mode
11.4.1 Introduction of Master/Slave Mode
AS01DNET-A can work as a DeviceNet master as well as slave with at most 4 AS01DNET modules connectable to the
right side of AS PLC. Running on the right of AS-series PLC, AS01DNET-A with AS-series PLC together constitutes the
DeviceNet master or slave. When working in Master/Slave mode, AS01DNET-A is required to switch the function toggle
(RTU- Master/Slave) to Master/Slave mode and the DeviceNet Builder of version 2.04 and above is used for the setup.
For details about the setup, refer to Section 11.4.10.
 As a master, AS01DNET-A can provide the following function.
 Supporting the Client function of Explicit message;
 Supporting IO polling connection with slaves;
 The network configuration software DeviceNet Builder provides graphic configuration interface.
 Sending explicit messages to read and write the data in slave through the explicit message instruction
DNETRW.
 Automatically performing data exchange with the PLC module; users just need write a program for D register
in the PLC without using FROM/TO instructions.
 Offering 190 bytes of output data area and 190 bytes of input data area for exchanging data with the master.
 As a slave, AS01DNET-A can provide the following function.
 Explicit message Server and Group 2 only server connection mode;
 Polling connection;
 Offering 200 bytes of input data area and 200 bytes of output data area for exchanging data with master;
 Automatically exchanging data with the PLC. The user just need to write a program for D register in the PLC
without using FROM/TO instruction.
11.4.1.1. Scan List, Input Table and Output Table
Item Description Figure
Scan List
Before AS01DNET-A module works, the scan list
must be configured through the configuration
software. The scan list stores slave information
including node address, I/O type, I/O size and etc. for
data exchange. The scanner module manages the
slaves in the scan list, makes a connection with
slaves and exchange I/O data with them. For those
slaves which have not been configured to the scan
list, AS01DNET-A will not make a connection and I/O
data exchange with them.