C500DA101 Omron, C500DA101 Datasheet - Page 166

• 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

Data Exchange with CPU Unit
Example:
The content of D00100 is written to the Read Pointer (address 12).
Using the I/O WRITE Instruction, WRIT
The function of the WRIT instruction depends on the number of words trans-
ferred (1 or more than 1) as described below. When writing parameters and con-
version data directly to RAM in the Analog Operation Unit, set the number of
words transferred to a value greater than 1.
When executing the WRITE instruction with the First Cycle Flag, there is a possi-
bility that the Analog I/O Unit’s internal processing may not be completed, and
the WRITE instruction is not executed. When executing the WRITE instruction
immediately after operation is started, use either of the following as the execu-
tion condition of the WRITE instruction:
• Bit 2 of word n+1 (A/D Write Completed Flag)
• A timer of at least 3 s.
All data written by the WRIT instruction is checked regardless of whether a func-
tion is enabled. If setting errors are detected, none of the data will be written.
Therefore, only the data required for settings should be written individually.
If a series of data containing the settings of the functions not to be used is written,
make settings so that the default values will be written as the settings for unused
functions. This must be done before executing the WRIT instruction.
When the Number of Words Transferred is 1
The I/O READ instruction, READ, uses the set value of the Read Pointer to read
data from the specified number of words starting from the specified address in
RAM.
The value of the Read Pointer remains valid until the next WRIT instruction is
executed with the number of words transferred is turned ON, until the power is
CPU Unit
CPU Unit
Number of words transferred = 0001
Always #0001
Transfer source address
Transfer source address
First allocated I/O address
Pointer
settings
Pointer
settings
Analog Output Unit (Allocated I/O words: n, n+1)
Allocated I/O words: 0002, 0003
Address
Read
Pointer
Address
Read
Pointer
Analog Output Unit
Set the value of the Read Pointer (address
12) for the Analog Output Unit. The content of
S is written to address 12. Use this instruction
in conjunction with the READ Instruction.
Section
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