| SIMATIC S7-300, CPU 312C COMPACT CPU WITH MPI, 10 DI/6 DO, 2 FAST COUNTERS (10 KHZ), INTEGRATED 24V DC POWER SUPPLY, 16 KBYTE WORKING MEMORY, MICRO MEMORY CARD REQUIRED |
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Supply voltage |
Rated voltage/DC | 24 V |
permissible range, lower limit (DC) | 20.4 V |
permissible range, upper limit (DC) | 28.8 V |
Load voltage L+ |
Rated value (DC) | 24 V |
permissible range, lower limit (DC) | 20.4 V |
permissible range, upper limit (DC) | 28.8 V |
Input current |
Rated value at 24 V DC | 500 mA |
Inrush current, max. | 11 A |
Power losses |
Power loss, max. | 6 W; incl. integrated inputs/outputs |
Memory |
Work memory |
integrated | 16 kbyte; For program and data |
expandable | No |
Load memory |
expandable FEPROM | Yes; with Micro Memory Card (MMC) |
expandable FEPROM, max. | 4 Mbyte |
Backup |
present | Yes; Guaranteed by MMC (maintenance-free) |
without battery | Yes; Program and data |
CPU processing times |
for bit operations, min. | 0.2 µs |
for bit operations, max. | 0.4 µs |
for word operations, min. | 1 µs |
for fixed point arithmetic, min. | 2 µs |
for floating point arithmetic, min. | 30 µs |
CPU-blocks |
DB |
Number, max. | 63; DB 0 reserved |
FB |
Number, max. | 64 |
FC |
Number, max. | 64 |
OB |
Size, max. | 16 kbyte |
Number of time alarm OBs | 1 |
Number of delay alarm OBs | 1 |
Number of time interrupt OBs | 1 |
Number of process alarm OBs | 1 |
Nesting depth |
per priority class | 8 |
additional within an error OB | 4 |
Counters, timers and their retentivity |
S7 counter |
Number | 128 |
of which retentive without battery |
adjustable | Yes |
lower limit | 0 |
upper limit | 128 |
Counting range |
lower limit | 1 |
upper limit | 999 |
IEC counter |
present | Yes |
Type | SFB |
S7 times |
Number | 128 |
Retentivity |
adjustable | Yes |
lower limit | 0 |
upper limit | 128 |
Time range |
lower limit | 10 ms |
upper limit | 9990 s |
IEC timer |
present | Yes |
Type | SFB |
Data areas and their retentivity |
Flag |
Number, max. | 128 byte |
Retentivity available | Yes; MB 0 to MB 127 |
Retentivity preset | MB 0 to MB 15 |
Address area |
I/O address area |
Inputs | 1 kbyte |
Outputs | 1 kbyte |
Process image |
Inputs | 128 byte |
Outputs | 128 byte |
Digital channels |
Inputs | 256 |
Outputs | 256 |
Analog channels |
Inputs | 64 |
Outputs | 32 |
Hardware configuration |
Racks, max. | 1 |
Modules per rack, max. | 8 |
Expansion devices, max. | 0 |
Number of DP masters |
via CP | 1 |
Number of operable FMs and CPs (recommended) |
FM | 4 |
CP, point-to-point | 2 |
CP, LAN | 1 |
Time of day |
Clock |
Software clock | Yes |
battery-backed and synchronizable | No |
Operating hours counter |
Number | 1 |
Clock synchronization |
supported | Yes |
Digital inputs |
Number/binary inputs | 10 |
Input voltage |
Rated value, DC | 24 V |
for signal "0" | -3 to +5 V |
for signal "1" | 15 to 30 V |
Input current |
for signal "1", typ. | 8 mA |
Input delay (for rated value of input voltage) |
for standard inputs |
Parameterizable | Yes |
at "0" to "1", max. | 100 µs; 0.1 / 0.3 / 3 / 15 ms |
for counter/technological functions |
at "0" to "1", max. | 50 µs |
Cable length |
Cable length, shielded, max. | 1000 m; 100 m for technological functions |
Cable length unshielded, max. | 600 m |
Digital outputs |
Number/binary outputs | 6 |
Functionality/short-circuit strength | Yes; Clocked electronically |
Limitation of inductive shutdown voltage to | L+ (-48 V) |
Output voltage |
for signal "1", min. | L+ (-0.8 V) |
Output current |
for signal "1" permissible range for 0 to 40 °C, max. | 500 mA |
for signal "1" permissible range for 0 to 60 °C, max. | Назад в раздел
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