Article number | 6ES7312-1AE14-0AB0 |
CPU312, 32KB | |
General information | |
HW functional status | 01 |
Firmware version | V3.3 |
Engineering with | |
● Programming package
|
STEP 7 V5.5 + SP1 or higher or STEP 7 V5.2 + SP1 or higher with HSP 218 |
Supply voltage | |
Rated value (DC) | |
● 24 V DC
|
Yes |
permissible range, lower limit (DC) | 19.2 V |
permissible range, upper limit (DC) | 28.8 V |
external protection for power supply lines (recommendation) | 2 A min. |
Mains buffering | |
● Mains/voltage failure stored energy time
|
5 ms |
● Repeat rate, min.
|
1 s |
Input current | |
Current consumption (rated value) | 650 mA |
Current consumption (in no-load operation), typ. | 140 mA |
Inrush current, typ. | 3.5 A |
I²t | 1 A²·s |
Power loss | |
Power loss, typ. | 4 W |
Memory | |
Work memory | |
● integrated
|
32 kbyte |
● expandable
|
No |
● Size of retentive memory for retentive data blocks
|
32 kbyte |
Load memory | |
● Plug-in (MMC)
|
Yes |
● Plug-in (MMC), max.
|
8 Mbyte |
● Data management on MMC (after last programming), min.
|
10 y |
Backup | |
● present
|
Yes; Guaranteed by MMC (maintenance-free) |
● without battery
|
Yes; Program and data |
CPU processing times | |
for bit operations, typ. | 0.1 µs |
for word operations, typ. | 0.24 µs |
for fixed point arithmetic, typ. | 0.32 µs |
for floating point arithmetic, typ. | 1.1 µs |
CPU-blocks | |
Number of blocks (total) | 1 024; (DBs, FCs, FBs); the maximum number of loadable blocks can be reduced by the MMC used. |
DB | |
● Number, max.
|
1 024; Number range: 1 to 16000 |
● Size, max.
|
32 kbyte |
FB | |
● Number, max.
|
1 024; Number range: 0 to 7999 |
● Size, max.
|
32 kbyte |
FC | |
● Number, max.
|
1 024; Number range: 0 to 7999 |
● Size, max.
|
32 kbyte |
OB | |
● Description
|
see instruction list |
● Size, max.
|
32 kbyte |
● Number of free cycle OBs
|
1; OB 1 |
● Number of time alarm OBs
|
1; OB 10 |
● Number of delay alarm OBs
|
2; OB 20, 21 |
● Number of cyclic interrupt OBs
|
4; OB 32, 33, 34, 35 |
● Number of process alarm OBs
|
1; OB 40 |
● Number of startup OBs
|
1; OB 100 |
● Number of asynchronous error OBs
|
4; OB 80, 82, 85, 87 |
● Number of synchronous error OBs
|
2; OB 121, 122 |
Nesting depth | |
● per priority class
|
16 |
● additional within an error OB
|
4 |
Counters, timers and their retentivity | |
S7 counter | |
● Number
|
256 |
Retentivity | |
— adjustable
|
Yes |
— lower limit
|
0 |
— upper limit
|
255 |
— preset
|
Z 0 to Z 7 |
Counting range | |
— lower limit
|
0 |
— upper limit
|
999 |
IEC counter | |
● present
|
Yes |
● Type
|
SFB |
● Number
|
Unlimited (limited only by RAM capacity) |
S7 times | |
● Number
|
256 |
Retentivity | |
— adjustable
|
Yes |
— lower limit
|
0 |
— upper limit
|
255 |
— preset
|
No retentivity |
Time range | |
— lower limit
|
10 ms |
— upper limit
|
9 990 s |
IEC timer | |
● present
|
Yes |
● Type
|
SFB |
● Number
|
Unlimited (limited only by RAM capacity) |
Data areas and their retentivity | |
retentive data area in total | all (incl. memory bits, times, counters) |
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. 2 KB per block |
Address area | |
I/O address area | |
● Inputs
|
1 024 byte |
● Outputs
|
1 024 byte |
Process image | |
● Inputs
|
1 024 byte |
● Outputs
|
1 024 byte |
● Inputs, adjustable
|
1 024 byte |
● Outputs, adjustable
|
1 024 byte |
● Inputs, default
|
128 byte |
● Outputs, default
|
128 byte |
Digital channels | |
● Inputs
|
256 |
— of which central
|
256 |
● Outputs
|
256 |
— of which central
|
256 |
Analog channels | |
● Inputs
|
64 |
— of which central
|
64 |
● Outputs
|
64 |
— of which central
|
64 |
Hardware configuration | |
Number of expansion units, max. | 0 |
Number of DP masters | |
● integrated
|
0 |
● 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.: 2 s |
● Behavior of the clock following POWER-ON
|
The clock continues at the time of day it had when power was switched off |
Operating hours counter | |
● Number
|
1 |
● Number/Number range
|
0 |
● Range of values
|
0 to 2^31 hours (when using SFC 101) |
● Granularity
|
1 h |
● retentive
|
Yes; Must be restarted at each restart |
Clock synchronization | |
● supported
|
Yes |
● to MPI, master
|
Yes |
● to MPI, slave
|
Yes |
● in AS, master
|
Yes |
● in AS, slave
|
No |
Digital inputs | |
Number of digital inputs | 0 |
Digital outputs | |
Number of digital outputs | 0 |
Analog inputs | |
Number of analog inputs | 0 |
Analog outputs | |
Number of analog outputs | 0 |
Interfaces | |
Number of industrial Ethernet interfaces | 0 |
Number of PROFINET interfaces | 0 |
Number of RS 485 interfaces | 1; MPI |
Number of RS 422 interfaces | 0 |
1. Interface | |
Interface type | Integrated RS 485 interface |
Physics | RS 485 |
Isolated | No |
Power supply to interface (15 to 30 V DC), max. | 200 mA |