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M800W/M80W Series Connection and Setup Manual
20 Setting the Hardware
20.6.5 Analog Input/Output Interface
(1) Up to 8 channels for analog input channel and up to 4 channels for analog output channel are available. The
following units have the analog input/output function:
(a) Built-in AI/AO of the main body
(b) AI card to be inserted to the expansion slot of the main body
(c)
Remote I/O unit with AI/AO
(d) Remote unit with AO
(e) Expansion card with AI/AO
(2) When an analog voltage is input to the analog input channel, the value according to the voltage can be read out
from the file register (analog input n (AIn)).
(3) When the data is set in the file register (analog output n (AOn)), the analog voltage according to the set data is
output from the analog output channel.
(4) When the built-in AI/AO is provided, the channels can be assigned to the file registers of analog input n (AIn) and
analog output n (AOn) in the ascending order of the station numbers of RIO unit corresponding to analog input/
output.
(5) When there is no built-in AI/AO, the channels are assigned in the ascending order of the station numbers of RIO
units.
(6) The relation of the analog input/output and the file register is shown below.
[PLC input signals]
When the analog voltage is input to the designated connector of the remote I/O unit with analog input or the built-in
AI/AO of main body, the data according to the input voltage can be read out from the file register.
Channel
AI0
AI1
AI2
AI3
AI4
AI5
AI6
AI7
[PLC output signals]
By setting data to file registers, the analog voltage can be output from the designated connector of the remote I/O
unit with analog output or the built-in AI/AO of main body.
Channel
A00
A01
A02
A03
(7) The example of the configuration for the analog input/output and the assignment order are illustrated on the next
page.
File register
R0
For the remote I/O unit with the analog input function,each channel
R1
is input per PC high-speed cycle.
When one station has four channels, all channels are input
R2
completely in four PC high-speed cycles.
R3
R4
For the built-in AI/AO,
R5
all channels are input per PC high-speed cycle.
All analog input of four channels are input completely in one PC high-
R6
speed cycle.
R7
File register(R)
R200
R201
R202
R203
Data update cycle
437
IB-1501268-K
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