103BCommunication
10.4 AS-i
S7-1200 Programmable controller
454
System Manual, 11/2011, A5E02486680-05
In the Devices and Networks portal, use the "Network view" to create the network
connections between the devices in your project. To create the AS-i connection, select the
yellow (AS-i) box on the first device. Drag a line to the AS-i box on the second device.
Release the mouse button and your AS-i connection is joined.
Refer to "Device Configuration: Creating a network connection" (Page 117) for more
information.
10.4.1.3
Assigning AS-i addresses to the CM 1243-2 AS-i Master module and AS-i slave
Configuring the AS-i interface
To configure parameters for the AS-i interfaces, click the yellow AS-i box on the
CM 1243-2 AS-i Master module, and the "Properties" tab in the inspector window displays
the AS-i interface. The AS-i slave interface is configured in the same manner.
Table 10- 42 Configuring the CM 1243-2 AS-i Master module and AS-i I/O module, compact, digital,
input slave interface
CM 1243-2 AS-i Master module
AS-i I/O module, compact, digital, input slave
1
1
①
AS-i port
Assigning the AS-i address
In an AS-i network, each device is assigned an AS-i address. This address can range from 0
through 31; however, address 0 is reserved only for new slave devices.
The slave addresses are 1(A or B) to 31(A or B) for a total of up to 62 slave devices. Any
address in the range of 1 - 31 can be assigned to an AS-i slave device; in other words, it
does not matter whether the slaves begin with address 21 or whether the first slave is
actually given the address 1.
A new slave that has not been assigned an address always has address 0. It is detected by
the master as a new slave without an address assignment and is not included in normal
communication until assigned an address.
In the Properties window, select the "AS-i address" configuration entry. STEP 7 displays the
AS-i address configuration dialog, which is used to assign the AS-i address of the device.
