C500DA101 Omron, C500DA101 Datasheet - Page 176

• 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

Four-word Operating Mode
Output Words (CPU Unit → Analog Output Unit)
Data Exchange with CPU Unit
n
n+1
Allocated I/O word
00 to 15
00
01
02
03
04
05
06
07
08 to 15
15
Bit
Write Data
Read/Write Request
Bit
Reserved
Reserved
EEPROM Write Bit
Reserved
Parameter Update Bit
PC Write Completed
Bit
PC Read Completed
Bit
Read/Write Pointer
Reserved
Name
This data is automatically written to RAM addresses
specified by the Read/Write Pointer (bits 08 to 15 of
word n+1) while a write cycle is being performed for
the Analog Output Unit.
This bit specifies whether access to the Analog
Output Unit is a read request (OFF) or a write
request (ON).
When a read request is specified, data in RAM
addresses specified by the Read/Write Pointer (bits
08 to 15 of word n+1) is read and stored as read
data in word n+2.
When a write request is specified, write data in word
n is written to RAM addresses specified by the
Read/Write Pointer (bits 08 to 15 of word n+1).
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When this bit is turned ON, data is transferred from
RAM to EEPROM. Due to the internal processing
time of the Analog Output Unit, turn ON this bit at
least 100 ms between each write operation.
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When this bit is turned ON, the last set parameters,
such as the scaling function, output ramp function,
upper/lower limit function, and binary/BCD mode,
are made valid. Due to the internal processing time
of the Analog Output Unit, turn ON this bit at least
100 ms after the parameters have been written.
This bit is turned ON in the CPU Unit to notify the
Analog Output Unit that there is new data in words n
and n+1. After verifying that the Analog Output Unit
Read Completed Flag (bit 06 of word n+3) is ON,
the CPU Unit turns OFF this bit. When this bit is
turned OFF, the Analog Output Unit Read
Completed Flag turns OFF again. If an attempt is
made to write data without turning ON this bit, it will
be ignored.
This bit is turned ON in the CPU Unit to notify the
Analog Output Unit that data has been read from
words n+2 and n+3. When this bit is turned ON, the
Analog Output Unit Write Completed Flag (bit 07 of
word n+3) turns OFF again. After verifying that the
Analog Output Unit Write Completed flag is turned
OFF, the CPU Unit turns OFF this bit.
This pointer specifies a RAM address. BCD values
between 00 and 61 are valid.
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Function
Section
165
9-3