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Siemens 6AG1412-3HJ14-4AB0 — Industrial PCs

Siemens 6AG1412-3HJ14-4AB0 SIPLUS S7-400 CPU 412-3H, 0–60°C

MPN6AG1412-3HJ14-4AB0

Siemens SIPLUS S7-400 CPU 412-3H, order code 6AG1412-3HJ14-4AB0, SFB type for fault-tolerant systems, 0 to 60 °C, 4096 digital I/O, RS 485 MPI/PROFIBUS DP.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

6AG1412-3HJ14-4AB0 key specifications
ParameterValue
TypeSFB
InterfacePluggable synchronization submodule (FO)
Type of memoryRAM
Feeding of external backup voltage to CPU5 V DC to 15 V DC
Backup current, max.660 µA
Backup current, typ.190 µA; Valid up to 40°C
Output current of the interface, max.150 mA
Power loss, typ.5.5 W
S7 communicationYes
Optical interfaceNo
PG (OP communication)Yes
Via interface module0

All specifications

6AG1412-3HJ14-4AB0 additional specifications
ParameterValue
S7 basic communicationNo
Global data communicationNo
Plug-in interface modulesSynchronization submodule IF 960 6ES7960-1AA04-0XA0
Number of other interfaces0
Number of RS 485 interfaces2
From interface 5 v DC, max.90 mA; At each DP interface
Reserved for OP communication1
Reserved for PG communication1
Reserved for s7 communication0
Reserved for s7 basic communication0
Adjustable for OP communication, max.0
Adjustable for PG communication, max.0
Adjustable for s7 communication, max.0
Adjustable for s7 basic communication, max.0
Direct data exchange (slave-to-slave communication)No
Number of instances for alarm 8 and s7 communication blocks, max.600
Number of connectionsNo configuration of CPU as DP slave
Number of connections, max.16
Ambient air temperature-barometric pressure-altitudeTmin ... Tmax at 1 080 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax - 20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m)
Depth219 mm
Width50 mm
Height290 mm
Weight, approx.990 g
CE markYes
FMSee manual Automation System S7-400H fault-tolerant systems. Limited by number of slots and number of connections
CFCYes
FBDYes
LADYes
MPIYes
SCLYes
STLYes
Max.60 °C; = Tmax
Min.0 °C; = Tmin
GRAPHYes
RDREC8
WRREC8
Inputs4 096
Number8
Preset120
RD_REC8
RS 485Yes; MPI/PROFIBUS DP
STEP 7Yes
WR_REC8
Via CP10
CP, PtPSee manual Automation System S7-400H fault-tolerant systems. Limited by number of slots and number of connections
ForcingYes
Outputs4 096
Overall16
PresentYes
RDSYSST8
RoutingYes
WR_PARM8
DPNRM_DG8
DP_TOPOL1
IsolatedYes
PARM_MOD1
WR_DPARM2
As clientYes
As serverYes
HiGraph®Yes
MPI, max.200 ms
RetentiveYes
SupportedYes; Via CP and loadable FB
VariablesInputs/outputs, memory bits, DBs, distributed I/Os, timers, counters
AdjustableYes
ExpandableNo
Integrated1
Resolution1 ms
S7 routingYes
Size, max.8 kbyte
Command setsee instruction list
Granularity1 h
Lower limit10 ms
SYNC (FREEZE)No
Single stepYes
Slots, max.244
Upper limit9 990 s
EquidistanceNo
Inputs, max.244 byte
Number, max.2 048; Number range: 0 to 2047
Preset, max.300
Status blockYes
With batteryYes; all data
In AS, slaveYes
To DP, slaveYes
Outputs, max.244 byte
In AS, masterYes
To DP, masterYes
To MPI, slaveYes
Alarm 8-blocksYes
MulticomputingNo
Nesting levels8
Per slot, max.128 byte
Program alarmsYes
Required slots2
Expandable RAMYes
To MPI, masterYes
Inputs, default256 byte
Range of values0 to 32767 hours
Without batteryNo
Connectable OPs15 without message processing, 8 with message processing
Adjustable, max.16 kbyte
Firmware versionV4.5
Isochronous modeNo
Of which central4 096
Outputs, default256 byte
Rated valuePower supply via system power supply
Backup time, max.Dealt with in the module data manual with the secondary conditions and the factors of influence
PROFIBUS DP slaveNo
Expandable FEPROMYes
Forcing, variablesInputs/outputs, bit memories, distributed I/Os
Inputs, adjustable8 kbyte
PROFIBUS DP masterYes
Per priority class24
Retentivity presetMB 0 to MB 15
Number (Number range)0 to 7
Outputs, adjustable8 kbyte
Programming packageSTEP 7 V5.3 SP2 or higher with HW update
HW functional status1
Reserved for routing0
Expandable RAM, max.64 Mbyte
Integrated RAM, max.256 kbyte
Consistent data, max.244 byte
Integrated (For data)256 kbyte
Number of breakpoints4
Retentivity availableYes
System functionssee instruction list
Number of entries, max.3 200
Status (control variable)Yes
Symbol-related messagesNo
Transmission rate, max.12 Mbit/s
User data per job, max.8 kbyte
Expandable FEPROM, max.64 Mbyte
For bit operations, typ.0.075 µs
Integrated (For program)512 kbyte
Number of clock memories8; in 1 memory byte
Number of time alarm OBs4
Process control messagesYes
For word operations, typ.0.075 µs
Number of DP slaves, max.32
Number of delay alarm OBs4
Number of variables, max.256
PROFIBUS and ethernet CPs14; Of which max. 10 CP as DP master
Hardware clock (real-time)Yes
Number of process alarm OBs4
Adjustable for routing, max.0
Mixed mode IM + CP permittedNo
Retentive and synchronizableYes
System function blockssee instruction list
User data per DP slave, max.244 byte
Additional within an error OB1
Number of cyclic interrupt OBs4
Number of expansion units, max.21
From backplane bus 5 v DC, max.1.5 A
From backplane bus 5 v DC, typ.1.2 A
For fixed point arithmetic, typ.0.075 µs
From backplane bus 24 v DC, max.150 mA; Per DP interface
Number of subprocess images, max.15
Deviation per day (buffered), max.1.7 ms; Power off
For floating point arithmetic, typ.0.225 µs
Number of connectable IM 460s, max.6
Number of connectable IM 463s, max.4; Single mode only
Activation (deactivation of DP slaves)No
CiR synchronization time, basic load150 ms
Deviation per day (unbuffered), max.8.6 ms; Power on
Number of connectable IMs (total), max.6
Simultaneously active Alarm-S blocks, max.100
CiR synchronization time, time per i (O byte)40 µs
User program protection (password protection)Yes
User data per job (of which consistent), max.240 byte
Number of connectable OPs with message processing8
Number of connectable OPs without message processing15
Number of login stations for message functions, max.8
Retentive data area (incl. timers, counters, flags), max.Total working and load memory (with backup battery)
Number of simultaneous AG-SEND (AG-RECV orders per CPU, max.)24/24
Number of archives that can log on simultaneously (SFB 37 AR_SEND)16

Product details

Fault-tolerant CPU for S7-400H racks

The Siemens 6AG1412-3HJ14-4AB0 is a SIPLUS S7-400 CPU 412-3H, an SFB-type processor built for the S7-400H fault-tolerant automation system. Its function manual (FM) limits the configuration by the number of slots and connections in the rack, so the actual I/O count and communication links depend on the backplane and power supply chosen.

Wide temperature and onboard fieldbus

Rated for 0 °C to 60 °C ambient, this CPU fits into conditioned cabinets and industrial enclosures without derating across the range. The onboard RS 485 interface supports both MPI and PROFIBUS DP, so it can talk to operator panels, drives, and remote I/O without an extra CP module. Digital I/O capacity reaches 4096 inputs and 4096 outputs, enough for medium-to-large distributed plants. The CPU measures 50 mm wide, 290 mm high, and 219 mm deep — standard S7-400 form factor that snaps into the rack.

Programming and engineering tools

Supports LAD, FBD, STL, SCL, GRAPH, and CFC programming — covers ladder, function block, structured text, and continuous function chart. STEP 7 engineering is required; the CPU also handles routing, forcing, and a full set of system-diagnosis blocks.

The 6AG1412-3HJ14-4AB0 carries a CE mark.

MPN
6AG1412-3HJ14-4AB0