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TM238LDD24DT M238 PLC 14DI 10DO NewTM238LDD24DT
Main
Range of product
Modicon M238 logic controller
Product or component type
Compact base
Discrete I/O number
24
Discrete input number
6 input EN/IEC 61131-2 type 1
8 fast input EN/IEC 61131-2 type 1Discrete input voltage
24 V
Discrete input voltage type
DC
Discrete output number
4 fast output
6 outputDiscrete output voltage
24 V DC
Number of I/O expansion module
7
[Us] rated supply voltage
24 V DC
Memory description
Internal RAM 512 kB
Data backed up
Variables of type retain and retain persistent (internal battery) 3 days , 22 h ,10 yr
Variables of type retain and retain persistent (optional battery lithium thionyl chloride (TSXPLP01)) 1 yearMounting support
35 mm symmetrical DIN rail
PanelComplementary
Discrete input logic
Positive logic (sink) fast input
Sink or source (positive/negative) inputNumber of common point
1 input
1 fast output
2 output
4 fast inputSensor power supply
19,2...30 V DC
Voltage state1 guaranteed
≥ 15 V input/fast input
Current state 1 guaranteed
≥ 2 mA input/fast input
Voltage state 0 guaranteed
≤ 5 V input/fast input
Current state 0 guaranteed
≤ 1,5 mA input/fast input
Discrete input current
8 mA fast input
10,4 mA inputInput impedance
2,3 kOhm input
3 kOhm fast inputResponse time
0.25 ms fast output
3 ms input
300 ns fast input
< 1 ms outputConfigurable filtering time
0,004 ms fast input
0,4 ms fast input
1 ms fast input
2 ms fast input
4 ms fast inputAnti bounce filtering
0 ms configurable input/fast input
1.5 ms configurable input/fast input
4 ms configurable input/fast input
12 ms configurable input/fast inputInput frequency
≤ 100 kHz fast input (normal mode)
≤ 100 kHz fast input (counter mode)
≤ 100 kHz inputCable length
≤ 10 m fast output (PWM or PTO mode)
≤ 10 m , shielded cable fast input (counter mode)
≤ 30 m , shielded cable fast output (normal mode)
≤ 30 m output
≤ 30 m fast input (normal mode)
≤ 30 m inputIsolation between channels and internal logic
500 V DC
Isolation between channels
500 V for group of 2 fast inputs
500 V for output and fast output
None inputDiscrete output logic
Positive logic (source)
Output voltage limits
19.2...30 V
Discrete output current
20...500 mA output
≤ 100 mA fast output (PTO mode)
≤ 100 mA fast output (PWM mode)
≤ 500 mA fast output (normal mode)Output frequency
≤ 100 kHz fast output (PTO mode)
≤ 100 kHz output
≤ 20 kHz fast output (PWM mode)Absolute accuracy error
0.01 fast output (PTO mode)
1 % of full scale cyclic ratio 20...80% fast output (PWM mode)Leakage current
0,05 mA output
≤ 2 mA fast output[Ures] residual voltage
≤ 2 V output and fast output
Tungsten load
≤ 3 W output and fast output
Short-circuit protection
With , output and fast output
Overvoltage protection
With , output and fast output
Overload protection
With , output and fast output
Input/output number
≤ 136 , removable screw terminal block with I/O expansion module
≤ 192 , spring terminal block with I/O expansion module
≤ 248 , HE-10 connector with I/O expansion moduleSupply voltage limits
20,4...28,8 V
Inrush current
≤ 35 A
Power consumption in W
≤ 17,2 W
Insulation resistance
> 10 MOhm at 500 V, between I/O and earth terminals
Exact time for 1 Kinstruction
70 % Boolean + 30 % fixed arithmetic : 3 ms
Execution time per instruction
Boolean : 0,971 µs
Arithmetic DINT double-word : 0,506 µs +, -, x operations
Arithmetic DINT double-word : 0,459 µs LD and ST
Arithmetic INT word : 0,439 µs +, -, x operations
Arithmetic INT word : 0,42 µs LD and ST
Arithmetic REAL floating : 5,111 µs +, -, x operations
Arithmetic REAL floating : 7,25 µs by operation
Arithmetic REAL floating : 0,648 µs LD and STExct time for event task
Arithmetic DINT double-word : 0,95 ms
Arithmetic INT word : ≥ 0,75 ms
Arithmetic REAL floating : ≤ 1,75 msSystem overhead
0,15 ms master task (PWM, frequency meter)
0,15 ms master task (simple counting)
0,2 ms master task (PTO)
0,35 ms master task (advanced counting)
0,9 ms master task (I/O)Input output assignment
Reading/writing I/O on base
Reading/writing I/O on extension modulesApplication structure
1 configurable freewheeling/cyclic master task
2 configurable freewheeling/cyclic/event auxiliary tasks
4 interrupt tasks
32 levels of priority between tasksRealtime clock
With , : 10 s/month 25 °C
Integrated connection type
Isolated serial link female RJ45 Modbus master/slave RTU/ASCII, character mode or SoMachine-Network (RS232/RS485), 1.2...115.2 kbit/s (115.2 kbit/s by default)
Supply
Serial link supply , 5 V 200 mA
Positioning functions
PWM/PTO 2 100 kHz
Counting input number
8 100 kHz , 32 bits
Complementary function
PID
Event processingMarking
CE
Local signalling
1 LED , PWR
1 LED , : RUN
1 LED , : Batt
1 LED , : module error (ERR)
1 LED , : SL1
1 LED per channel , : I/O stateElectrical connection
1 connector mini B USB 2.0 for a programming terminal
1 removable screw terminal block for connecting the 24 V DC power supply
1 removable screw terminal block (10 terminals) for connecting the 4 preactuators (fast output)
1 removable screw terminal block (12 terminals) for connecting the sensors (fast inputs)
1 removable screw terminal block (6 terminals) for connecting the 6 preactuators (output)
1 removable screw terminal block (7 terminals) for connecting the sensors (inputs)Product weight
0,56 kg
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