
1SKC000006C0201
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Automation Technologies
Control
IT
Automation Devices
Overview Central Units
Small PLC Slot-PLC
AC31 series 40..50 AC31 series 90
Details Type: CR41 CT41 CR42 CT42 KR51 KT51 SL97
Program memory
Flash EPROM and RAM [KByte] 32 32 480
Supply voltage
24 V DC x x x x x x
120 / 230 V AC x – x – x –
Pug-in Smart Media Card – – x
Cycle time for 1 KByte [ms]
100% binary values 0.4 0.4 –
65% binary values and 35% word 1.2 1.2 0.22
Number of inputs and outputs
Integrated (DI / DO / DC) 8 / 6 / – 8 / 6 / – 8 / 6 / – – / – / –
DI/DO maximum 110 110 1000 992
integrated (AI / AO) – / – 3 / – – / – – / –
AI/AO maximum 36 36 222 224 / 224
Digital inputs 24 V DC x x –
Digital outputs:
Transistor (T) 24 V DC, 0,5 A – x – x – x –
Relays (R) 120 / 230 V AC, 2 A x – x – x – –
Analogue input range
± 10 V – x – –
0 ... 10 V, 0 ... 5 V, ± 5 V – – – –
0 ... 20 mA, 4 ... 20 mA – – – –
PT100 (– 50 °C ... + 400 °C) – – – –
PT100 (– 30 °C ... + 70 °C) – – – –
PT100 (– 100 °C ... + 524 °C) – x – –
configurable as DI – – – –
Analogue output range
± 10 V – – –
0 ... 20 mA, 4 ... 20 mA – – –
Data bufferung via battery integrated integrated optional
Real-time clock x x x
Programming package
907 AC 1131 x x x
907 PC 331 x x –
AC31GRAF x x –
Programm execution
cyclical or time driven x x x
multitasking x x x
user program protection
password x x x
Serial interfaces
RS232 (programming, MODBUS, ASCII) 1 1 (RS232 or RS485) 1
RS485 (CS31 as MODBUS) – 1 –
Integrated potentiometer 2 2 –
Data memory [KByte] 2 2 256, incl. 16 KB RETAIN
Timers unlimited (42 at the same time) unlimited (42 at the same time) unlimited
Counters unlimited (function) unlimited (function) unlimited
High-speed counters (number/frequency) 2 / 7 kHz 2 / 7 kHz –
Interfaces / Protocols
CS31 – x x
ASCII x x x
MODBUS
®
x x x
Ethernet – – –
ARCNET – – x
PROFIBUS-DP – – x
CANopen – – –
DeviceNet – – x
AC31Safety-Fieldbus – – –
RCOM (additional coupler) – – –
Note: centrally expansible with 6 I/O modules of series 40 ... 50, max.
Up to 110 digital or up to 36 analogue or mixed.
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