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5. SPECIFICATIONS
5.1 General specification
Item
Dielectric withstand
voltage
General specifications other than the above are the same as the main unit of the
Programmable Controller. (Refer to the Hardware manual of the Programmable controller)
5.2 Power supply specification and others
Item
Analog circuits
Digital circuits
Isolation
Number of occupied
I/O points
5.3 Defining gain and offset
Item
Range of analog output
Digital input
Resolution
Integrated accuracy
Processing time
Output characteristics
6. ALLOCATION OF BUFFER MEMORY (BFM)
6.1 Buffer memory
BFM
b15 to b8
number
#0 to #15
#16
Reserved
#17
#18 or more
BFM#16: The D/A conversion data of the channel specified with BFM#17 (digital value) is written.
The D/A data is written in binary in order of the lower 8bit and higher 4bit and divided into two
portions.
BFM#17: b0•••The D/A conversion of CH2 begins by changing of 1→0.
b1•••The D/A conversion of CH1 begins by changing of 1→0.
b2•••The lower eight bit data for the D/A conversion is held by changing of 1→0.
Write data in the above-mentioned buffer memory by "8. Program example".
500V AC 1min (Between analog output terminals and case)
24V DC ±10% 85mA (Internal power supplied from the main unit)
5V DC 30mA (Internal power supplied from the main unit)
Photo-coupler isolation between analog and digital circuits.
(No isolation between analog channels.)
The blocks occupies either 8 input or output points.
(Can be either inputs or outputs)
Voltage output
At shipping, the unit is adjusted to a digital range of 0 to 4000 for an analog
voltage output of 0 to 10V DC. When using an FX
differing voltage output except 0 to 10V DC, it is necessary to adjust the
offset and gain.
0 to 10V DC, 0 to 5V DC
(External load resistance 2K to
1MΩ)
12bit
2.5mV: 10V/4000(At shipment)
Change depending on the output
characteristic.
± 0.1V
4ms/1 channel (synchronized to be sequence program)
Analog value
:0 to 10V
Digital value
:0 to 4000
10.238V
10V
0
Digital value
If a digital source data of greater than 12 bits is used, only the lower 12 bits
will be valid. Additional (upper) bits will be ignored
Use a digital value within the range from 0 to 4095.
The output characteristic can be set to each of the two channels.
b7 to b3
Lower data holding
Reserved
bit
Content
Content
4 to 20mA
(External load resistance 400Ω or
less)
4µA: (20-4)A/4000
Change depending on the output
characteristic.
± 0.16mA
at
shipment
4000
b2
Reserved
Digital source data for output (8 bit)
CH1 D/A
conversion
beginning
Reserved
Current output
-2DA for current or
2N
Analog value
:4 to 20mA
Digital value
:0 to 4000
20.380mA
20mA
4mA
0
4000
Digital value
b1
CH2 D/A
conversion
beginning
b0
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