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1.
Performance Specifications
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Item
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C20R/C20RC
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C20T/C20TC
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C32T/C32TC
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Program method
/Control method
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Relay symbol/Cyclic operation
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Number of
I/O points
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No expansion
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20 points (Input 12 points/Output 8
points)
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20 points (Input 12 points/Output 8
points)
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32 points (Input 16 points/Output 16
points)
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w/expansion
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Max. 100 points
Max. 180 points when the transistor
output is mixed.
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Max. 180 points
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Max. 192 points
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Remote I/O
(MEWNET-TR)
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Max. 244 points
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Max. 244 points
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Max. 256 points
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Program
memory
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Internal memory
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Built-in RAM (lithium battery
backup)
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Optional memory
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EEPROM (Master memory unit)/EPROM
(Memory unit) not included
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Operation speed
(central value/step)
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1.6 µs/step (basic
instruction)
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Number of
instructions
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Basic
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81
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High-level
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111
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Program capacity
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2,720 steps
(C20R/C20T/C32T)/5,000steps (C20RC/C20TC/C32TC)
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Internal relay
(R)
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1,008 points (R0 to R62F)
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Special internal
relay (R)
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64 points (from R9000)
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Timer/Counter
(T/C)
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144 points (T0 to T99/C100 to C143
at the initial setting)
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Data register
(DT)
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1,660 words (DT0 to
DT1659)(C20R/C20T/C32T)/
6,144 words (DT0 to DT6143)
(C20RC/C20TC/C32TC)
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Auxiliary timer
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Unlimited number of points
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Special data register
(DT)
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112 words (from DT9000)(42 words of
the 112 words are for the high-performance word
register)
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Index register (IX, IY)
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2 words
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MCR (Master control relay) points
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32 points
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Number of
labels
(JP and LOOP)
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64 labels
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Differential
points
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Unlimited number of points
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Number of
step ladder
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128 stages
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Number of
subroutines
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16 subroutines
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Number of
interrupt program
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9 programs
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Special
functions
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High speed counter
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2 points Input ch0: X0 and X1
(count)/X2 (reset)
Counting Mode : Up mode, Down mode,
Up/Down mode, 2 phases mode
Counting range : -8,388,608 to
8,388,607
Max. counting speed : 1 phase mode
10 kHz, 2 phases mode 10 kHz
Min. input pulse width : 1 phase 50
µs, 2 phases 50 µs
ch1*2: X3 and X4 (count)/X5 (reset)
Counting Mode : Up mode, Down mode,
Up/Down mode, 2 phases mode
Counting range : -8,388,608 to
8,388,607
Max. counting speed : 1 phase mode
2.5 kHz, 2 phases mode 2 kHz
Min. input pulse width : 1 phase 200
µs, 2 phases 250 µs
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Volume input
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2 points
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Pulse catch input
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8 points in total (X0 to X7)
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Interrupt input
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Periodical interrupt
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10 ms to 30 s (10 ms interval)
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RS232C
port
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C type only
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1 ch
Transmission speed:
300/600/1,200/2,400/4,800/9,600/19,200 bits/s.
(Selectable either the computer link
or general communications.)
Communication distance: 15 m 49.213
ft.
Connector: D sub 9-pin connector
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Clock/Calendar
function
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Year (the last 2 digits), month,
day, hour, minute, second and day of week
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Pulse
output
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Transistor
output type
only
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2 points (Y6/Y7) *1
Pulse output frequency: Selectable 6
ranges (1,440 Hz to 4.9 kHz/720 Hz to 4.9 kHz/360 Hz
4.9 kHz/180 Hz to 4.9 kHz/90 Hz to 4.9 kHz/45 Hz to
4.9 kHz)
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Constant
scan
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I/O is refreshed every 2.5 ms×set
value (within 160 ms)
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Adjustable input time filtering
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1 to 128 ms (Selected in unit of 8
points, it can be used only on the control board.)
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Self-diagnosis function
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Such as watchdog timer, program
syntax check, etc.
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Memory backup
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Approx. 27,000 h (C types,
C20RC/C20TC/C32TC)
Approx. 53,000 h (except C types,
C20R/C20T/C32T)
At under the ambient temperature 25°C
75 °
F (Battery failure can
be detected.)
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Notes
*1) The two pulse outputs, Y6 and Y7, are
not available at the same time. (Y6/Y7 switch-over method)
Pulse output can be internally connected to
the high-speed counter input. However, the inputs X0 and X1
cannot be used as external inputs in this step.
*2) ch 1 is available for CPU Ver.2.D or
later.
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2.
General Specifications
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Item
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Description
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Rated operating voltage
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24 V DC
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Allowable voltage range
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Operation power supply *1
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I/O power supply
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21.6 V to 26.4 V DC
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20.4 V to 26.4 V DC (C20T, C32T
series)
22.8 V to 26.4 V DC (C20R series)
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Current consumption
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0.2 A or less
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Approx. 5 mA per an input point
Approx. 3 mA per an output
point (except load current)
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Ambient temperature *2
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0°C to 55°C 33
° F
to 131 ° F
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Storage temperature
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-20°C to 70°C -
4 °
F to 158 °
F
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Ambient humidity
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30 to 85% RH (non-condensing)
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Storage humidity
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30 to 85% RH (non-condensing)
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Breakdown voltage *3
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Between external terminal and
ground:
500 V AC for 1 min.
Between relay output terminal and
ground :
1,500 V AC for 1 min.
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Insulation resistance *3
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100 m ohm or more, between external
terminal and ground
(measured with a 500V DC megger
testing)
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Vibration resistance
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10 Hz to 55 Hz, 1 sweep/min., double
amplitude of 0.75 mm .030 inch,
10 min. on 3 axes.
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Shock resistance
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98 m/s2 or more 4 times
on 3 axes
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Noise immunity
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1000 V(p-p) with pulse widths 50 ns
and 1 µs
(based on in-house measurements)
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Operation condition
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Free from corrosive gases and
excessive dust
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Note:
*1) The operation power supply in not
insulated from the internal power supply (Vcc), so a power
supply equipment of the insulation type
should be used. It is also recommended to
have the power supply separated from the I/O power supply.
*2) Keep the number of input points which
are simultaneously ON within the range shown in the right
figure when the temperature is between 40°C 104
° F
and 55°C131 °
F. The number may vary with
different expansion boards. For details, consult us.
*3) Proceed the breakdown voltage test or
withstand insulation test without a capacitor between the
power supply lines and FG.
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3.
Input Specifications
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Item
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Description
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Rated input
voltage
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24 V DC
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Operating voltage
range
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20.4 to 26.4 V DC
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Min. ON voltage
/ON current
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19.2 V/3 mA *1
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Max. OFF voltage/OFF current
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2.4 V/1 mA
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Input
impedance
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Control board: Approx. 4.8 k ohm
Expansion board: Approx. 4.4 k ohm
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Response
time
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OFF--->ON
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2 ms or less
(at normal input) *2
50 µs or less
(in setting high-speed counter
input)
200 µs or less
(in setting interrupt input)
500 µs or less
(in setting pulse catch input)
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ON--->OFF
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Same as above
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Operating
indicator
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LED display
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Insulation
method
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Optical coupler
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Notes:
*1) The ON current of the inputs X0 to X2 on
the control board C32T/C32TC is 3.6 mA or less.
*2) For control board, input response time
can be changed using the adjustable input time filtering
function to 1, 2, 4, 8, 16, 32, 64, or 128 ms in unit of 8
inputs.
However, for expansion boards, the input
response time is fixed at 2 ms or less.
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<Reference>
Life characteristics of built-in relay (PA relay)
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| 4.
Output Specifications
1) Relay output type
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Item
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Description
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Output type
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Normally open
(1 Form A)
non-polarity 2 points/common
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Rated operation
voltage
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24 V DC
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Rated control
capacity
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2A 250V AC, 2A 30V DC
(load resistance)
(See note.)
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Response
time
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OFF--->ON
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8 ms or less
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ON--->OFF
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10 ms or less
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Life
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Mechanical
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2×107 operations or more
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Electrical
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105 operations or more
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Surge
absorber
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None
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Operating
indicator
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LED display
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Note: Current capacity per common should be
2A or less.
2) Transistor output type
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Item
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Description
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Output type
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Open collector
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Rated voltage
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24 V DC
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Operating
voltage range
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20.4 to 26.4 V DC
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Max. load current
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0.8 A
(load resistance)
(See note.)
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OFF state
leakage current
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100µA or less
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ON state
voltage drop
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1.5 V or less
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Response time
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OFF--->ON
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1 ms or less
(Y6 and Y7 100µs or less)
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ON--->OFF
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1 ms or less
(Y6 and Y7 100 µs or less)
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Surge absorber
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Zener diode
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Insulation method
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Optical coupler
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Operating indicator
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LED display
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Note: The maximum current per common should
be 5 A or less.The maximum load current is kept the
following ranges under the high ambient temperature.
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