Data sheet 6ES7312-5BF04-0AB0 SIMATIC S7-300, CPU 312C Compact CPU with MPI, 10 DI/6 DQ, 2 high-speed counters (10 kHz) Integr. power supply 24 V DC, work memory 64 KB, Front connector (1x 40-pole) and Micro Memory Card required General information HW functional status 01 Firmware version V3.3 Engineering with ● Programming package STEP 7 V5.5 + SP1 or higher or STEP 7 V5.3 + SP2 or higher with HSP 203 Supply voltage Rated value (DC) ● 24 V DC Yes permissible range, lower limit (DC) 19.
— Reverse polarity protection No Input current Current consumption (rated value) 570 mA Current consumption (in no-load operation), typ. 90 mA Inrush current, typ. 5A I²t 0.7 A²·s Digital outputs ● from load voltage L+, max. 25 mA Power loss Power loss, typ. 8W Memory Work memory ● integrated 64 kbyte ● expandable No ● Size of retentive memory for retentive data blocks 64 kbyte Load memory ● Plug-in (MMC) Yes ● Plug-in (MMC), max.
OB ● Description see instruction list ● Size, max.
● Type SFB ● Number Unlimited (limited only by RAM capacity) Data areas and their retentivity retentive data area in total All, max. 64 KB Flag ● Number, max. 256 byte ● Retentivity available Yes; MB 0 to MB 255 ● Retentivity preset MB 0 to MB 15 ● Number of clock memories 8; 1 memory byte Data blocks ● Retentivity adjustable Yes; via non-retain property on DB ● Retentivity preset Yes Local data ● per priority class, max. 32 kbyte; Max.
Hardware configuration Number of expansion units, max. 0 Number of DP masters ● integrated none ● via CP 4 Number of operable FMs and CPs (recommended) ● FM 8 ● CP, PtP 8 ● CP, LAN 4 Rack ● Racks, max. 1 ● Modules per rack, max. 8 Time of day Clock ● Software clock Yes ● retentive and synchronizable No; Buffered: No, Can be synchronized: Yes ● Deviation per day, max. 10 s; Typ.
— up to 60 °C, max. 5 vertical installation — up to 40 °C, max. 5 Input voltage ● Rated value (DC) 24 V ● for signal "0" -3 to +5V ● for signal "1" +15 to +30V Input current ● for signal "1", typ. 8 mA Input delay (for rated value of input voltage) for standard inputs — parameterizable Yes; 0.1 / 0.3 / 3 / 15 ms (You can reconfigure the input delay of the standard inputs during program runtime.
● for signal "1" permissible range, min. 5 mA ● for signal "1" permissible range, max. 0.6 A ● for signal "1" minimum load current 5 mA ● for signal "0" residual current, max. 0.5 mA Parallel switching of two outputs ● for uprating No ● for redundant control of a load Yes Switching frequency ● with resistive load, max. 100 Hz ● with inductive load, max. 0.5 Hz ● on lamp load, max. 100 Hz ● of the pulse outputs, with resistive load, max. 2.
Isolated No Power supply to interface (15 to 30 V DC), max. 200 mA Protocols ● MPI Yes ● PROFIBUS DP master No ● PROFIBUS DP slave No ● Point-to-point connection No MPI ● Transmission rate, max. 187.
● overall 6 ● usable for PG communication 5 — reserved for PG communication 1 — adjustable for PG communication, min. 1 — adjustable for PG communication, max. 5 ● usable for OP communication 5 — reserved for OP communication 1 — adjustable for OP communication, min. 1 — adjustable for OP communication, max. 5 ● usable for S7 basic communication 2 — reserved for S7 basic communication 0 — adjustable for S7 basic communication, min. 0 — adjustable for S7 basic communication, max.
— preset 10 Service data ● can be read out Yes Interrupts/diagnostics/status information Diagnostics indication LED ● Status indicator digital input (green) Yes ● Status indicator digital output (green) Yes Integrated Functions Number of counters 2; See "Technological Functions" manual Counting frequency (counter) max.
● Nesting levels 8 ● System functions (SFC) see instruction list ● System function blocks (SFB) see instruction list Programming language — LAD Yes — FBD Yes — STL Yes — SCL Yes — GRAPH Yes — HiGraph® Yes Know-how protection ● User program protection/password protection Yes ● Block encryption Yes; With S7 block Privacy Dimensions Width 80 mm Height 125 mm Depth 130 mm Weights Weight, approx.