Advertisement
4.
LINKING TO THE AnACPU (WITH DEDICATED INSTRUCTIONS)
AND THE AJ71 PT32-S3
MELSEC-A
4.4
Assignment of an A64RDC Buffer
The assignment of an A64RDC buffer (without battery backup)
is shown
below.
I
(decimal)
Address
I
Contents (16 bits)
I
0
I
Conversion-enabled/disabled specification
I
1
I
Averaging
processing
specification
CH1 Averaging time/count
CH2 Averaging time/count
CH3 Averaging time/count
I
5
I
CH4
Averaging
time/count
6
CH1 Detected
temperature
value
7
CH2
Detected
temperature
value
I
8
I
CH3
Detected
temperature
value
CH4 Detected temperature value
(32
bits)
(HI
CH2 Detected temperature value
(L)
(32
bits)
(H)
(32 bits)
CH3 Detected temperature value
(L)
(H)
1 3
(32
bits)
(L)
-
CH4 Detected temperature value
(H)
Write data error code
I
19
I
Conversion-completed
flag
Type specification of a platinum
I
20
I
temperature-measuring
resistor
Readhrite area for use with a PC CPU
Read-only area for use with a PC CPU
Readhrite area for use with a PC CPU
Read-only area for use with a PC CPU
Readhrite area for use with a PC CPU
CAUTION
I
Addresses 6 to 17 and 19 of the buffer are areas used exclusively for
reading from the PC CPU. Therefore, if the A64RDC writes data to these
areas, any data stored in these areas will be overwritten and destroyed. In
this case, the A64RDC detects an error, stores the error code in address
18,
and the RUN LED flashes.
I
1
4 -
14
Advertisement
