408
Analog I/O Units Section 7-4
Main Analog I/O Unit
Specifications
Analog I/O Units are connected to the CP1H CPU Unit. Up to seven Units can
be connected, including any other Expansion Units and Expansion I/O Units
that are also connected.
Note (1) The conversion time is the total time for 2 analog inputs and 1 analog out-
put.
(2) With analog outputs it is possible to use both voltage outputs and current
outputs at the same time. In this case however, the total output current
must not exceed 21 mA.
CP1H CPU Unit
A maximum of 7 Expansion Units or Expansion I/O Units can be connected.
IN
OUT
V O UT C O M I IN 1 V IN 2 C O M2
I O U T V IN 1 C O M1 I IN 2
MAD01
CH
CH
EXP
IN
00
CH
CH
02 04 06 08 10
OUT
01COM 0305070911
COM COM COM 03COM06
00 01 02 04 05 07
00 01 02 03 04 05 06
07
08 09 10 11
20EDR1
CH
00 01 02 03 04 05 06 07
NC
NC
NC
CH
EXP
IN
00 02
01COM 03
COM 0507
04 06
CH
00 01 02 03
08 09 10 11
8ED
EXP
CPM1A-20EDR1
Expansion I/O Unit
CPM1A-8ED
Expansion I/O Unit
CPM1A-MAD01
Analog I/O Unit
1 analog output
2 analog inputs
Item Voltage I/O Current I/O
Analog
Input
Section
Number of inputs 2
Input signal range 0 to 10 V/1 to 5 V 4 to 20 mA
Max. rated input ±15 V ±30 mA
External input impedance 1 MΩ min. 250 Ω rated current
Resolution 1/256
Accuracy 1.0% full scale
A/D conversion data 8-bit binary
Analog
Output
Section
(See
note 2.)
Number of outputs 1
Output signal range 0 to 10 V or −10 to 10 V 4 to 20 mA
Max. external output current 5 mA ---
Allowable external output load resistance --- 350 Ω
Resolution 1/256 (1/512 when the output signal range is −10 to 10 V)
Accuracy 1.0% of full scale
Set data 8-bit signed binary
Conversion time 10 ms max. per Unit (See note 1.)
Isolation method Photocoupler isolation between I/O terminals and PC signals.
No isolation between analog I/O signals.
Current consumption 5 VDC: 66 mA max., 24 VDC: 66 mA max.
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