 | SIMATIC S7-200, CPU 221 COMPACT UNIT, DC POWER SUPPLY 6 DI DC/4 DO DC, 4 KB CODE/2 KB DATA, |
| 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 |
| Inrush current, max. | 10 A; at 28.8 V |
| from supply voltage L+, max. | 450 mA; 80 to 450 mA |
| Encoder supply |
| 24 V encoder supply |
| ● 24 V | Yes; permissible range: 15.4 to 28.8 V |
| ● short-circuit protection | Yes; electronic at 600 mA |
| ● Output current, max. | 180 mA |
| Memory |
| Type of memory | other |
| Number of memory modules (optional) | 1; pluggable memory module, content identical with integral EEPROM; can additionally store recipes, data logs and other files |
| Data and program memory |
| ● Data memory, max. | 2 kbyte |
| ● Program memory, max. | 4 kbyte |
| Backup |
| ● present | Yes; Program: Entire program maintenance-free on integral EEPROM, programmable via CPU; data: Entire DB 1 loaded from PG/PC maintenance-free on integral EEPROM, current values of DB 1 in RAM, retentive memory bits, timers, counters, etc. maintenance-free via high-performance capacitor; optional battery for long-term buffering |
| Battery |
| Backup battery |
| ● Backup time, max. | 50 h; (min. 8 h at 40 °C); 200 days (typ.) with optional battery module |
| CPU processing times |
| for bit operations, max. | 0.22 µs |
| Counters, timers and their retentivity |
| S7 counter |
| ● Number | 256 |
| of which retentive with battery |
| — can be set | Yes; via high-performance capacitor or battery |
| — lower limit | 1 |
| — upper limit | 256 |
| Counting range |
| — lower limit | 0 |
| — upper limit | 32 767 |
| S7 times |
| ● Number | 256 |
| of which retentive with battery |
| — can be set | Yes; via high-performance capacitor or battery |
| — upper limit | 64 |
| Time range |
| — lower limit | 1 ms |
| — upper limit | 54 min; 4 timers: 1 ms to 30 s; 16 timers: 10 ms to 5 min; 236 timers: 100 ms to 54 min |
| Data areas and their retentivity |
| Flag |
| ● Number, max. | 32 byte |
| ● Retentivity available | Yes; M 0.0 to M 31.7 |
| ● of which retentive with battery | 0 to 255, via high-performance capacitor or battery, adjustable |
| ● of which retentive without battery | 0 to 112 in EEPROM, adjustable |
| Hardware configuration |
| Connectable programming devices/PCs | SIMATIC PG/PC, standard PC |
| Digital inputs |
| Number of digital inputs | 6; Integrated |
| m/p-reading | Yes; optionally, per group |
| Input voltage |
| ● Rated value, DC | 24 V |
| ● for signal "0" | 0 to 5 V |
| ● for signal "1" | min. 15 V |
| Input current |
| ● for signal "1", typ. | 2.5 mA |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| — Parameterizable | Yes; all |
| — at "0" to "1", min. | 0.2 ms |
| — at "0" to "1", max. | 12.8 ms |
| for interrupt inputs |
| — Parameterizable | Yes; I 0.0 to I 0.3 |
| for counter/technological functions |
| — Parameterizable | Yes; (E0.0 to E0.5) 30 kHz |
| Cable length |
| ● Cable length, shielded, max. | 500 m; Standard input: 500 m, high-speed counters: 50 m |
| ● Cable length unshielded, max. | 300 m; not for high-speed signals |
| Digital outputs |
| Number of digital outputs | 4; Transistor |
| short-circuit protection | No; to be provided externally |
| Limitation of inductive shutdown voltage to | 1 W |
| Switching capacity of the outputs |
| ● with resistive load, max. | 0.75 A |
| ● on lamp load, max. | 5 W |
| Output voltage |
| ● for signal "1", min. | 20 V DC |
| Output current |
| ● for signal "1" rated value | 750 mA |
| ● for signal "0" residual current, max. | 0.1 mA |
| Output delay with resistive load |
| ● "0" to "1", max. | 15 µs; of the standard outputs, max. (Q0.2 to Q0.3) 15 µs; of the pulse outputs, max. (Q0.0 to Q0.1) 2 µs |
| ● "1" to "0", max. | 130 µs; of the standard outputs, max. (Q0.2 to Q0.3) 100 µs; of the pulse outputs, max. (Q0.0 to Q0.1) 10 µs |
| Parallel switching of 2 outputs |
| ● for increased power | Yes |
| Switching frequency |
| ● of the pulse outputs, with resistive load, max. | 20 kHz; Q0.0 to Q0.1 |
| Aggregate current of outputs (per group) |
| all mounting positions |
| — up to 40 °C, max. | 3 A |
| horizontal installation |
| — up to 55 °C, max. | 3 A |
| Relay outputs |
| ● Max. number of relay outputs, integrated | 0 |
| Cable length |
| ● Cable length, shielded, max. | 500 m |
| ● Cable length unshielded, max. | 150 m |
| Analog inputs |
| Number of analog potentiometers | 1; Analog potentiometer; resolution 8 bit |
| Encoder |
| Connectable encoders |
| ● 2-wire sensor | Yes |
| — Permissible quiescent current (2-wire sensor), max. | 1 mA |
| 1st interface |
| Interface type | Integrated RS 485 interface |
| Physics | RS 485 |
| Functionality |
| ● MPI | Yes; As MPI slave for data exchange with MPI masters (S7-300/S7-400 CPUs, OPs, TDs, Push Button Panels); S7-200-internal CPU/CPU communication is possible in the MPI network with restrictions; transmission rates: 19.2/187.5 kbit/s |
| ● PPI | Yes; with PPI protocol for program functions, HMI functions (TD 200, OP), S7-200-internal CPU/CPU communication ; transmission rates 9.6/19.2/187.5 kbit/s |
| ● Serial data exchange | Yes; As freely programmable interface with interrupt facility for serial data exchange with third-party devices with ASCII protocol transfer rates: 1.2 / 2.4 / 4.8 / 9.6 / 19.2 / 38.4 / 57.6 / 115.2 kbit/s; the PC/PPI cable can also be used as RS232/RS485 converter |
| MPI |
| ● Transmission rate, min. | 19.2 kbit/s |
| ● Transmission rate, max. | 187.5 kbit/s |
| Integrated Functions |
| Number of counters | 4; High-speed counters (30 kHz each), 32 bits (incl. sign), can be used as up/down counters or for connecting 2 incremental encoders with 2 pulse trains offset by 90° (max. 20 kHz (A/B counters)); parameterizable enable and reset input; interrupt facilities (incl. call of subroutine with any content) when the setpoint is reached; reversal in counting direction, etc. |
| Counter frequency (counter) max. | 30 kHz |
| Number of alarm inputs | 4; 4 rising edges and/or 4 falling edges |
| Number of pulse outputs | 2; High-speed outputs, 20 kHz, with interrupt option; pulse-width and frequency modulation option |
| Limit frequency (pulse) | 20 kHz |
| Galvanic isolation |
| Galvanic isolation digital inputs |
| ● between the channels | Yes |
| ● between the channels, in groups of | 2 and 4 |
| Galvanic isolation digital outputs |
| ● between the channels | Yes; Optocoupler |
| ● between the channels, in groups of | 4 |
| Permissible potential difference |
| between different circuits | 500 V DC between 24 V DC and 5 V DC |
| Degree and class of protection |
| IP20 | Yes |
| Ambient conditions |
| Environmental conditions | For further environmental conditions, see "Automation System S7-200, System Manual" |
| Operating temperature |
| ● horizontal installation, min. | 0 °C |
| ● horizontal installation, max. | 55 °C |
| ● vertical installation, min. | 0 °C |
| ● vertical installation, max. | 45 °C |
| Air pressure |
| ● permissible range, min. | 860 hPa |
| ● permissible range, max. | 1 080 hPa |
| Relative humidity |
| ● Operation, min. | 5 % |
| ● Operation, max. | 95 %; RH class 2 in accordance with IEC 1131-2 |
| Configuration |
| programming |
| ● Command set | Bit logic instructions, compare instructions, timer instructions, counter instructions, clock instructions, transmissions instructions, table instructions, logic instructions, shift and rotate instructions, conversion instructions, program control instructions, interrupt and communications instructions, logic stack instructions, integer maths, floating-point math instructions, numerical functions |
| ● Program processing | free cycle (OB 1), interrupt-controller, time-controlled (1 to 255 ms) |
| ● Program organization | 1 OB, 1 DB, 1 SDB subroutines with/without parameter transfer |
| ● Number of subroutines, max. | 64 |
| Programming language |
| — LAD | Yes |
| — FBD | Yes |
| — STL | Yes |
| Know-how protection |
| ● User program protection/password protection | Yes; 3-stage password protection |
| Connection method |
| Plug-in I/O terminals | No |
| Dimensions |
| Width | 90 mm |
| Height | 80 mm |
| Depth | 62 mm |
| Weights |
| Weight, approx. | 270 g |
| last modified: | 08.09.2014 |
