C500DA101 Omron, C500DA101 Datasheet - Page 91

• Manufacturer Part Number: C500DA101
• Description: ANALOG OUTPUT UNIT
• Manufacturer: Omron

Specifications of C500DA101

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• No. Of Analog Outputs: 4
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

5-4
5-4-1
76
Data Exchange with CPU Unit
Data Exchange with CPU Unit
Communications with the CPU Unit
CPU
Unit
Note The C500-AD501 requires the I/O READ and I/O WRITE instructions to operate.
Bits 03 to 15 in word n+1
Bits 03 to 15 in word n
OUT Output bits
LD Input bits
Word n+1
The Unit communicates with the CPU Unit in 2-word mode using the I/O READ/
WRITE instructions in ladder logic. Specific ladder logic examples are in 5-7 Pro-
gramming Examples. Details about the ladder instructions and their execution
can be found in the Operation Manual for your PC.
The Unit has internal memory that provides storage for the Unit data and config-
uration parameters. This map contains both read and write areas, and is ac-
cessed by the CPU Unit through the I/O READ/WRITE ladder instructions.
The Unit is allocated two I/O words. The first word, referred to as “n” in this manu-
al, is used to output (write) data from the CPU Unit to the Analog I/O Unit. The
second word, n + 1, is used to input (read) data from the Analog I/O Unit to the
CPU Unit. The following diagram illustrates the basic data movements.
It therefore cannot be mounted to a SYSMAC BUS Slave Rack.
READ
Word n
WRIT
RAM
addresses
I/O
words
000
to
045
046
to
153
Data written to EEPROM
Data transferred
at startup
Data written
(special
commands)
Data read
EEPROM write setting
High/low alarm reset
Out-of-range error re-
set
Peak hold data reset
Setting errors
Conversion errors
High/low alarms
Out-of-range alarms
Special commands
are used to transfer
data between
shared memory
and a Data Carrier.
EEPROM
Section
5-4