Start address, subaddress
For analog input and analog output modules ( 8 outputs) only the
lowest address (start address) is set. Other addresses (subaddresses)
are decoded on the module.
Note
The start address of an analog module must be a multiple of the
double channel number.
8 channels : 0, 16, 32, 48, ... 240
If one of the outputs (Channel 0 to 7) of a module is to be addressed,
the relevant subaddress must be specified in the program.
The subaddress of the input or output, based on the start address of the
module, is given by:
Start a 2 x channel no. = subaddress
Example:
Analog input module with 8 outputs
The address is the sum of the significances set with the individual
coding switches.
160 = 128 + 32 = 2
7
+ 2
5
A module with 8 outputs (Channel 0 to 7) and start address 160
reserves the address range from
160 to address 160 + 7 x 2 = 174
In this example, the next free address for another module is 176.
Addresses already assigned must not be set again.
On Setting
(Switch Pressed)
IB 160
128
64
32
16
8
4
2
1
ADB
7
ADB
6
ADB
5
ADB
4
ADB
3
ADB
2
ADB
1
ADB
0
The 470 Analog Output Module
System Manual
9 - 108
C79000-B8576-C109-03