6. ANALOG INPUT MODULE (AAD04A) CONNECTIONS B-61813E/03
6.2 CORRESPONDENCE BETWEEN INPUT SIGNALS AND
ADDRESSES IN A MODULE
In the analog input module AAD04A, the 4-channel analog input
signals are cyclically A-D converted in order, and the converted digital
data are written in the following addresses. Therefore, in the PMC
program, it is possible at any time to know the values for the analog
input signals by referring to the following addresses.
(1) PMC-N, Q (PMC for Series 15 AND F-D Mate)
in module 7 6543210
0 X-0 X-0 X-0 X-0 D11-0 D10-0 D09-0 D08-0
1 D07-0 D06-0 D05-0 D04-0 D03-0 D02-0 D01-0 D00-0
2 X-1 X-1 X-1 X-1 D11-1 D10-1 D09-1 D08-1
3 D07-1 D06-1 D05-1 D04-1 D03-1 D02-1 D01-1 D00-1
4 X-2 X-2 X-2 X-2 D11-2 D10-2 D09-2 D08-2
5 D07-2 D06-2 D05-2 D04-2 D03-2 D02-2 D01-2 D00-2
6 X-3 X-3 X-3 X-3 D11-3 D10-3 D09-3 D08-3
7 D07-3 D06-3 D05-3 D04-3 D03-3 D02-3 D01-3 D00-3
D00-n and D11-n correspond to the weights of 2
Here, D11-n corresponds to the sign bit in the complementary
representation of "2."
In addition, in X-n is written the same value as that in D11-n.
When addressing I/O modules, the beginning address
for this module should be assigned to an even one.
Moreover, when an A-D converted value is referred
to in a PMC program, make sure to read the data in
unit of a word (16 bits).