Delta AH500 - Configuration of AH10 DNET-5 A; Data Mapping Areas; Assignment of Mapping Area (in Master Mode)

AH500 Module Manual
10-14
10.4 Configuration of AH10DNET-5A
10.4.1 Data Mapping Areas
This section is going to introduce the mapping relations between an AH500 series CPU module and
AH10DNET-5A.
An AH500 series CPU module can be extended by connecting maximum 8 AH10DNET-5A scanner
modules which could only be installed to the main backplane. After AH10DNET-5A and an AH500
series CPU module is connected, users could specify the starting register addresses for the input
mapping and output mapping.
When only one backplane exists and there are several AH10DNET-5As on the right side of an
AH500 series CPU module, the software distinguishes different AH10DNET-5As according to their
unit numbers. The farther the scanner module is away from an AH500 series CPU module, the
larger its unit number is. The unit number of the first AH10DNET-5A of the right side of an AH500
series CPU module is 1. The next one nearest to the first scanner module is 2. And the following
ones will be 3, 4 and so on.
10.4.2 Assignment of Mapping Area (in Master Mode)
While AH10DNET-5A works in master mode and the starting addresses for output and input are
specified as D500 and D1000 respectively, the mapping area will be assigned as the following table
is.
Input area: Slave->Master
Output area: Master->Slave
AH500 series
CPU module
Register No.
Purpose
Data
Length
AH500 series
CPU module
Register No.
Purpose
Data
Length
D1000~D1003
Scan list node
status display
area (See section
10.6.1.)
4 words D500~D503
Bit-strobe
command area
(See section
10.5.)
4 words
D1004
Scanner module
status display
area (See section
10.6.2.)
1 word D504 Reserved 1 word
D1005~D1494
DeviceNet input
data area: these
registers are used
for receiving the
status data
feedback from the
slave.
Max.
length:
490
words
D505~D994
DeviceNet output
data area: the
values in these
registers are sent
to the slave as
the control data.
Max.
length:
490
words
Note: D1000 and D500 in the above table are the starting addresses in the mapping area. If the
addresses are set to other registers, the corresponding function will be assigned to other
registers.
If the length of DeviceNet input data area is 3 words, AH10DNET-5A will occupy D1000~D1004 and
D1005~D1007 in an AH500 series CPU module automatically. Meanwhile, if the length of DeviceNet
output data area is 2 words, AH10DNET-5A will occupy D500~D504 and D505~D506 in an AH500
series CPU module automatically.