The Quantum 140CPU43412A CPU is a single-slot programmablecontroller with built-in executive memory, application memory andcommunication ports. All memory components are on board so noadditional chips or cartridges are necessary.Quantum CPUs use flash memory technology to support the CPU’sexecutive memory and instruction set. Flash is a state-of-the-art,nonvolatile memory technology that enables downloadable fieldupgrades as new features become available.The application program can be stored in either battery-backed RAMand/or Flash RAM. The battery is located on the front of the CPU andcan be serviced while the CPU is running. To protect the applicationprogram from inadvertent changes during operation, the140CPU43412A features a memory-protect switch. An LED goes onwhen this switch is activated.The 140CPU43412A CPU has two Modbus® ports and one ModbusPlus™ port. Simple rotary switches on the back of the CPU are used toset the network address of the Modbus Plus port. Each device on aModbus Plus network must have a unique address in the range 1 … 64.
The 140CPU43412A is a 80486 PLC Processor with 896kB internal RAM. 2 Modbus RS232 and 1 Modbus Plus port. 1.2Ah lithium battery. Key switch function. Supports Modsoft, version 2.6 or higher Concept, version 2.1 or higher ProWORX NxT, version 2.0 or higher ProWORX Plus, version 1.05 or higher ProWORX 32, version 1.0 or higher Unity, version 1.0 or higher.
66MHz Clock frequency
-0 to 60°C Ambient temperature
range of product
Modicon Quantum automation platform
product or component type
Concept ProWORX 32
Internal RAM 896 kB
exact time for 1 Kinstruction
0.1…0.5 ms LL984
+/-8 s/day at 32…140 °F (0…60 °C)
30 I/32 O distributed 64 I/64 O max local 64 I/64 O remote
500 I/500 O distributed
number of drops
number of network
2 remote 3 distributed
Lithium 7 µA 210 µA
number of port
1 Modbus Plus 2 Modbus RS232
communication module processor capacity
6 NOM, NOE, CR, NMS
bus current requirement
1.87 lb(US) (0.85 kg)
FM Class 1 Division 2 CUL
UL 508 CSA C22.2 No 142
resistance to electrostatic discharge
4 kV contact conforming to IEC 801-2 8 kV on air conforming to IEC 801-2
resistance to electromagnetic fields
9.14 V/yd (10 V/m) 80…2000 MHz conforming to IEC 801-3
ambient air temperature for operation
32…140 °F (0…60 °C)
ambient air temperature for storage
-40…185 °F (-40…85 °C)
95 % without condensation
<= 16404.2 ft (5000 m)
Ordering and shipping details
18150 – QUANTUM CONTROLLERS,HSBY,COMM.
Nbr. of units in pkg.
Country of origin
Sustainable offer status
Green Premium product
RoHS (date code: YYWW)
Compliant – since 0945 – Schneider Electric declaration of conformity Schneider Electric declaration of conformity
Reference not containing SVHC above the threshold
Product environmental profile
Product end of life instructions
1、What is the replacement for the 140CPU43412A?
The replacement is the 140CPU43412U.
2、Which Quantum PLCs allow the use of an Aux task in Unity?
The 140CPU65150, 140CPU65160, and 140CPU67160 allow the use of Aux tasks numbered 0 thru 3. The 140CPU31110, 140CPU43412A, and 140CPU53414A will only allow the use of a Fast and a Mast task.
3、Which Quantum controllers support Concept IEC Hot Standby?
The following Quantum controllers support Concept IEC HSBY: 140CPU43412 140CPU43412A 140CPU53414 140CPU53414A 140CPU53414B
4、Which Quantum PLCs are supported in Unity Software?
The following PLCs are supported: 140CPU67160 140CPU65160 140CPU65150 140CPU31110 140CPU53414A* 140CPU43412A* *These two controllers require a new Exec file to function with Unity
5、Which Quantum PLCs have the Factory Mutual (FM) Class 1 Div. 2 rating?
All Quantum CPUs are FM Class 1 Div 2 approved. 140CPU11302 140CPU11303 140CPU43412A 140CPU53414A 140CPU53414B 140CPU65150 140CPU65160 140CPU652 60 140CPU67160 140CPU67260 140CPU67261 140CPU65160S (SIL 3 / ATEX Zone 2/22) This CPU meets and exceeds the FM Class 1 Div. 2 rating 140CPU67160S (SIL 3 / ATEX Zone 2/22) This CPU meets and exceeds the FM Class 1 Div. 2 rating