![](/image/data/SIEMENS_Original/6ES7/635/6ES7635-2EC02-0AE3/6ES76352EC020AE3.jpg) |
SIMATIC C7-635 KEYS, COMPACT UNIT WITH INTEGRATED COMPONENTS: S7-300 CPU314C-2 DP AND OP170B, 24 DI, 16 DO, 5 AI, 2 AO; MICRO MEMORY CARD AND CONNECTOR SET REQUIRED |
Supply voltage |
24 V DC |
Yes |
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 |
Digital inputs |
● from load voltage L+ (without load), max. |
70 mA |
Digital outputs |
● from load voltage L+, max. |
100 mA |
Power loss |
Power loss, typ. |
14 W |
Memory |
Work memory |
● integrated |
96 kbyte; For program and data |
● expandable |
No |
Load memory |
● Plug-in (MMC) |
Yes |
● Plug-in (MMC), max. |
8 Mbyte |
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 bit operations, max. |
0.2 µs |
for word operations, typ. |
0.2 µs |
for fixed point arithmetic, typ. |
2 µs |
for floating point arithmetic, typ. |
3 µs |
CPU-blocks |
DB |
● Number, max. |
511; Number range: 1 to 511 |
● Size, max. |
16 kbyte |
FB |
● Number, max. |
1 024; Number range: 0 to 2047 |
● Size, max. |
16 kbyte |
FC |
● Number, max. |
1 024; Number range: 0 to 2047 |
● Size, max. |
16 kbyte |
OB |
● Number, max. |
see instruction list |
● Size, max. |
16 kbyte |
● Number of free cycle OBs |
1; OB 1 |
● Number of time alarm OBs |
1; OB 10 |
● Number of delay alarm OBs |
1; OB 20 |
● Number of time interrupt OBs |
1; OB 35 |
● Number of process alarm OBs |
1; OB 40 |
● Number of startup OBs |
1; OB 100 |
● Number of asynchronous error OBs |
5; OB 80, 82, 85, 86, 87 |
Nesting depth |
● per priority class |
8 |
● additional within an error OB |
4 |
Counters, timers and their retentivity |
S7 counter |
● Number |
256 |
of which retentive without battery |
— adjustable |
Yes |
— lower limit |
0 |
— upper limit |
255 |
Retentivity |
— adjustable |
Yes |
— preset |
8 |
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 |
of which retentive without battery |
— adjustable |
Yes |
— lower limit |
0 |
— upper limit |
255 |
Retentivity |
— adjustable |
Yes |
— 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 |
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 |
● Number, max. |
511 |
● Size, max. |
16 kbyte |
Local data |
● per priority class, max. |
510 byte |
Address area |
I/O address area |
● Inputs |
1 kbyte |
● Outputs |
1 kbyte |
of which distributed |
— Inputs |
1 000 byte |
— Outputs |
1 008 byte |
Process image |
● Inputs |
128 byte |
● Outputs |
128 byte |
Default addresses of the integrated channels |
— Digital inputs |
124.0 to 126.7 |
— Digital outputs |
124.0 to 125.7 |
— Analog inputs |
752 to 761 |
— Analog outputs |
752 to 755 |
Digital channels |
● Inputs |
8 192 |
● Outputs |
8 192 |
● Inputs, of which central |
1 016 |
● Outputs, of which central |
1 008 |
Analog channels |
● Inputs |
512 |
● Outputs |
512 |
● Inputs, of which central |
253 |
● Outputs, of which central |
250 |
Hardware configuration |
Number of DP masters |
● integrated |
1 |
● via CP |
4 |
Number of operable FMs and CPs (recommended) |
● FM |
8 |
● CP, point-to-point |
8 |
● CP, LAN |
10 |
Rack |
● Racks, max. |
4 |
● Modules per rack, max. |
8; In rack 3 max. 7 |
Time of day |
Clock |
● Hardware clock (real-time clock) |
Yes |
● battery-backed and synchronizable |
Yes |
● Deviation per day, max. |
10 s |
● Backup time |
6 wk; At 40 °C ambient temperature |
Operating hours counter |
● Number |
1 |
● Number/Number range |
0 |
● Range of values |
0 to 2^31 hours (when using SFC 101) |
● Granularity |
1 hour |
● retentive |
Yes; Must be restarted at each restart |
Clock synchronization |
● supported |
Yes |
● to MPI, master |
Yes |
● to MPI, slave |
Yes |
● in AS, master |
Yes |
Digital inputs |
Number of digital inputs |
24 |
● of which inputs usable for technological functions |
16 |
integrated channels (DI) |
24 |
Input characteristic curve in accordance with IEC 61131, type 1 |
Yes |
Number of simultaneously controllable inputs |
horizontal installation |
— up to 40 °C, max. |
24 |
— up to 60 °C, max. |
12 |
vertical installation |
— up to 40 °C, max. |
12 |
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. |
9 mA |
Input delay (for rated value of input voltage) |
for standard inputs |
— parameterizable |
Yes; 0.1 / 0.3 / 3 / 15 ms |
— Rated value |
3 ms |
for counter/technological functions |
— at "0" to "1", max. |
8 µs |
Cable length |
● Cable length, shielded, max. |
1 000 m; 50 m for technological functions |
● Cable length unshielded, max. |
600 m; For technological functions: No |
Technological functions |
— shielded, max. |
50 m |
— unshielded, max. |
not allowed |
Standard DI |
— shielded, max. |
1 000 m |
— unshielded, max. |
600 m |
Digital outputs |
Number of digital outputs |
16 |
● of which high-speed outputs |
4 |
integrated channels (DO) |
16 |
Short-circuit protection |
Yes; Clocked electronically |
● Response threshold, typ. |
1 A |
Limitation of inductive shutdown voltage to |
L+ (-48 V) |
Controlling a digital input |
Yes |
Switching capacity of the outputs |
● Lamp load, max. |
5 W |
Load resistance range |
● lower limit |
48 Ω |
● upper limit |
4 kΩ |
Output voltage |
● for signal "1", min. |
L+ (-0.8 V) |
Output current |
● for signal "1" rated value |
500 mA |
● 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 2 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. |
2.5 kHz |
Total current of the outputs (per group) |
horizontal installation |
— up to 40 °C, max. |
3 A |
vertical installation |
— up to 40 °C, max. |
2 A |
Cable length |
● Cable length, shielded, max. |
1 000 m |
● Cable length unshielded, max. |
600 m |
Analog inputs |
integrated channels (AI) |
4+1 |
Number of analog inputs for voltage/current measurement |
4 |
Number of analog inputs for resistance/resistance thermometer measurement |
1 |
permissible input voltage for current input (destruction limit), max. |
2.5 V; Permanent |
permissible input voltage for voltage input (destruction limit), max. |
30 V; Permanent |
permissible input current for voltage input (destruction limit), max. |
0.5 mA; Permanent |
permissible input current for current input (destruction limit), max. |
50 mA; Permanent |
Technical unit for temperature measurement adjustable |
Yes; Degrees Celsius / degrees Fahrenheit / Kelvin |
Input ranges |
● Current |
Yes |
● Resistance thermometer |
Yes |
● Resistance |
Yes |
Input ranges (rated values), voltages |
● 0 to +10 V |
Yes |
● Input resistance (0 to 10 V) |
100 kΩ |
● -10 V to +10 V |
Yes |
● Input resistance (-10 V to +10 V) |
100 kΩ |
Input ranges (rated values), currents |
● 0 to 20 mA |
Yes |
● Input resistance (0 to 20 mA) |
50 Ω |
● -20 to +20 mA |
Yes |
● Input resistance (-20 to +20 mA) |
50 Ω |
● 4 to 20 mA |
Yes |
● Input resistance (4 to 20 mA) |
50 Ω |
Input ranges (rated values), resistance thermometers |
● Pt 100 |
Yes |
● Input resistance (Pt 100) |
10 MΩ |
Input ranges (rated values), resistors |
● No-load voltage, typ. |
2.5 V |
● Measuring current, typ. |
1.8 to 3.3 mA |
● 0 to 600 Ohm |
Yes |
● Input resistance (0 to 600 Ohm) |
10 MΩ |
Thermocouple (TC) |
Temperature compensation |
— parameterizable |
No |
Characteristic linearization |
● parameterizable |
Yes; by software |
— for resistance thermometer |
Pt 100 |
Cable length |
● Cable length, shielded, max. |
100 m |
Analog outputs |
Number of analog outputs |
2 |
integrated channels (AO) |
2 |
Voltage output, short-circuit protection |
Yes |
Voltage output, short-circuit current, max. |
55 mA |
Current output, no-load voltage, max. |
17 V |
Output ranges, voltage |
● 0 to 10 V |
Yes |
● -10 to +10 V |
Yes |
Output ranges, current |
● 0 to 20 mA |
Yes |
● -20 to +20 mA |
Yes |
● 4 to 20 mA |
Yes |
Connection of actuators |
● for voltage output two-wire connection |
Yes; Without compensation of the line resistances |
● for voltage output four-wire connection |
No |
● for current output two-wire connection |
Yes |
Load impedance (in rated range of output) |
● with voltage outputs, min. |
1 kΩ |
● with voltage outputs, capacitive load, max. |
0.1 µF |
● with current outputs, max. |
300 Ω |
● with current outputs, inductive load, max. |
0.1 mH |
Destruction limits against externally applied voltages and currents |
● Voltages at the outputs towards MANA |
16 V; Permanent |
● Current, max. |
50 mA; Permanent |
Cable length |
● Cable length, shielded, max. |
200 m |
Analog value generation |
Measurement principle |
Actual value encryption (successive approximation) |
Integration and conversion time/resolution per channel |
● Resolution with overrange (bit including sign), max. |
12 bit |
● Integration time, parameterizable |
Yes; 2,5 / 16,6 / 20 ms |
● permissible input frequency, max. |
400 Hz |
● Conversion time (per channel) |
1 ms |
● Time constant of the input filter |
0.38 ms |
● Basic execution time of the module (all channels released) |
1 ms |
Settling time |
● for resistive load |
0.6 ms |
● for capacitive load |
1 ms |
● for inductive load |
0.5 ms |
Encoder |
Connection of signal encoders |
● for voltage measurement |
Yes |
● for current measurement as 2-wire transducer |
Yes; with external supply |
● for current measurement as 4-wire transducer |
Yes |
● for resistance measurement with two-wire connection |
Yes; Without compensation of the line resistances |
● for resistance measurement with three-wire connection |
No |
● for resistance measurement with four-wire connection |
No |
Connectable encoders |
● 2-wire sensor |
Yes |
— permissible quiescent current (2-wire sensor), max. |
1.5 mA |
Errors/accuracies |
Temperature error (relative to input range), (+/-) |
0.006 %/K |
Crosstalk between the inputs, min. |
60 dB |
Repeat accuracy in steady state at 25 °C (relative to input area), (+/-) |
0.06 % |
Output ripple (based on output area, bandwidth 0 to 50 kHz), (+/-) |
0.1 % |
Linearity error (relative to output range), (+/-) |
0.15 % |
Temperature error (relative to output range), (+/-) |
0.01 %/K |
Crosstalk between the outputs, min. |
60 dB |
Repeat accuracy in steady state at 25 °C (relative to output area), (+/-) |
0.06 % |
Operational error limit in overall temperature range |
● Voltage, relative to input area, (+/-) |
1 % |
● Current, relative to input area, (+/-) |
1 % |
● Resistance, relative to input area, (+/-) |
5 % |
● Voltage, relative to output area, (+/-) |
1 % |
● Current, relative to output area, (+/-) |
1 % |
Basic error limit (operational limit at 25 °C) |
● Voltage, relative to input area, (+/-) |
0.7 %; Linearity error +/- 0.06 % |
● Current, relative to input area, (+/-) |
0.7 %; Linearity error +/- 0.06 % |
● Resistance, relative to input area, (+/-) |
3 %; Linearity error +/- 0.2% |
● Resistance thermometer, relative to input area, (+/-) |
3 % |
● Voltage, relative to output area, (+/-) |
0.7 % |
● Current, relative to output area, (+/-) |
0.7 % |
Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency |
● Series mode interference (peak value of interference < rated value of input range), min. |
30 dB |
● Common mode interference, min. |
40 dB |
Interfaces |
MPI |
● Cable length, max. |
50 m; without repeater |
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 |
Functionality |
● MPI |
Yes |
● DP master |
No |
● DP slave |
No |
● Point-to-point connection |
No |
MPI |
● Number of connections |
12 |
● Transmission rate, max. |
187.5 kbit/s |
Services |
— PG/OP communication |
Yes |
— Routing |
Yes |
— Global data communication |
Yes |
— S7 basic communication |
Yes |
— S7 communication |
Yes |
— S7 communication, as client |
No |
— S7 communication, as server |
Yes |
2. Interface |
Interface type |
Integrated RS 485 interface |
Physics |
RS 485 |
isolated |
Yes |
Power supply to interface (15 to 30 V DC), max. |
200 mA |
Number of connection resources |
12 |
Functionality |
● MPI |
No |
● DP master |
Yes |
● DP slave |
Yes |
● Point-to-point connection |
No |
DP master |
● Number of connections, max. |
12; For PG/OP communication |
● Number of connections (of which reserved), max. |
1 for PG, 1 for OP |
● Transmission rate, max. |
12 Mbit/s |
● Number of DP slaves, max. |
32 |
Services |
— PG/OP communication |
Yes |
— Routing |
Yes |
— Global data communication |
No |
— S7 basic communication |
Yes |
— S7 communication |
Yes |
— S7 communication, as client |
No |
— S7 communication, as server |
Yes |
— Equidistance mode support |
Yes |
— SYNC/FREEZE |
Yes |
— Activation/deactivation of DP slaves |
Yes |
— Direct data exchange (slave-to-slave communication) |
Yes |
— DPV1 |
Yes |
Address area |
— Inputs, max. |
1 kbyte |
— Outputs, max. |
1 kbyte |
User data per DP slave |
— Inputs, max. |
244 byte |
— Outputs, max. |
244 byte |
DP slave |
● Number of connections |
12 |
● GSD file |
The latest GSD file is available at: http://www.siemens.com/profibus-gsd |
● Transmission rate, max. |
12 kbit/s |
● Address area, max. |
32 |
● User data per address area, max. |
32 byte |
Services |
— PG/OP communication |
Yes |
— Routing |
Yes; Only with active interface |
— Global data communication |
No |
— S7 basic communication |
Yes |
— S7 communication |
Yes |
— Direct data exchange (slave-to-slave communication) |
Yes |
— DPV1 |
No |
Transfer memory |
— Inputs |
244 byte |
— Outputs |
244 byte |
Communication functions |
PG/OP communication |
Yes |
Routing |
Yes |
Global data communication |
● supported |
Yes |
● Number of GD loops, max. |
4 |
● Number of GD packets, max. |
4 |
● Number of GD packets, transmitter, max. |
4 |
● Number of GD packets, receiver, max. |
4 |
● Size of GD packets, max. |
22 byte |
● Size of GD packet (of which consistent), max. |
22 byte |
S7 basic communication |
● supported |
Yes |
● User data per job, max. |
76 byte |
● User data per job (of which consistent), max. |
76 byte; 76 bytes (with X_SEND or X_RCV); 64 bytes (with X_PUT or X_GET as server) |
S7 communication |
● supported |
Yes |
● as server |
Yes |
● as client |
Yes; Via CP and loadable FB |
● User data per job, max. |
180 kbyte; With PUT/GET |
● User data per job (of which consistent), max. |
64 byte |
S5 compatible communication |
● supported |
Yes; via CP and loadable FC |
Number of connections |
● overall |
12 |
● usable for PG communication |
11 |
— reserved for PG communication |
1 |
— adjustable for PG communication, min. |
1 |
— adjustable for PG communication, max. |
11 |
● usable for OP communication |
11 |
— reserved for OP communication |
1 |
— adjustable for OP communication, min. |
1 |
— adjustable for OP communication, max. |
11 |
● usable for S7 basic communication |
8 |
— reserved for S7 basic communication |
8 |
— adjustable for S7 basic communication, min. |
0 |
— adjustable for S7 basic communication, max. |
8 |
● usable for routing |
4; max. |
S7 message functions |
Number of login stations for message functions, max. |
12; Depending on the configured connections for PG/OP and S7 basic communication |
Process diagnostic messages |
Yes |
simultaneously active Alarm-S blocks, max. |
40 |
Test commissioning functions |
Status block |
Yes |
Single step |
Yes |
Number of breakpoints |
2 |
Status/control |
● Status/control variable |
Yes |
● Variables |
Inputs, outputs, memory bits, DB, times, counters |
● Number of variables, max. |
30 |
● of which status variables, max. |
30 |
● of which control variables, max. |
14 |
Forcing |
● Forcing |
Yes |
Diagnostic buffer |
● present |
Yes |
● Number of entries, max. |
100 |
Integrated Functions |
Number of counters |
4; See "Technological Functions" manual |
Counting frequency (counter) max. |
60 kHz |
Frequency measurement |
Yes |
Number of frequency meters |
4; up to 60 kHz (see "Technological Functions" manual) |
controlled positioning |
Yes |
integrated function blocks (closed-loop control) |
PID controller (see "Technological Functions" manual) |
PID controller |
Yes |
Number of pulse outputs |
4; Pulse width modulation up to 2.5 kHz (see "Technological Functions" Manual) |
Limit frequency (pulse) |
2.5 kHz |
Galvanic isolation |
Galvanic isolation digital inputs |
● Galvanic isolation digital inputs |
Yes |
● between the channels |
No |
● between the channels and the backplane bus |
Yes |
Galvanic isolation digital outputs |
● Galvanic isolation digital outputs |
Yes |
● between the channels |
Yes |
● between the channels, in groups of |
8 |
● between the channels and the backplane bus |
Yes |
Galvanic isolation analog inputs |
● Galvanic isolation analog inputs |
Yes; common for analog I/O |
● between the channels |
No |
● between the channels and the backplane bus |
Yes |
Galvanic isolation analog outputs |
● Galvanic isolation analog outputs |
Yes; common for analog I/O |
● between the channels |
No |
● between the channels and the backplane bus |
Yes |
Permissible potential difference |
between different circuits |
75 VDC / 60 VAC |
between inputs and MANA (UCM) |
8 V DC |
between MANA and M internally (UISO) |
75 VDC / 60 VAC |
Isolation |
Isolation tested with |
500 V DC |
Configuration |
Configuration software |
● STEP 7 |
Yes; V5.2 SP1 with HW update |
Programming |
● Command set |
see instruction list |
● 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 |
— CFC |
Yes |
— GRAPH |
Yes |
— HiGraph® |
Yes |
Know-how protection |
● User program protection/password protection |
Yes |
Dimensions |
Width |
260 mm |
Height |
273.8 mm |
Depth |
80 mm |
Mounting cutout/device depth (W x H x D) |
|
● Mounting cutout, width |
231 mm |
● Mounting cutout, height |
257 mm |
Weights |
Weight, approx. |
1 500 g |
last modified: |
31.07.2014 |