| SIMATIC S7-200, CPU 221 COMPACT UNIT, AC POWER SUPPLY 6 DI DC/4 DO RELAY 4 KB CODE/2 KB DATA, |
| Supply voltage |
| 120 V AC | Yes |
| 230 V AC | Yes |
| Line frequency |
| Frequency of the supply voltage | 63 Hz |
| Load voltage L+ |
| Rated value (DC) | 24 V |
| permissible range, lower limit (DC) | 5 V |
| permissible range, upper limit (DC) | 30 V |
| Load voltage L1 |
| Rated value (AC) | 100 V; 100 to 230 V AC |
| permissible range, lower limit (AC) | 5 V |
| permissible range, upper limit (AC) | 250 V |
| permissible frequency range, lower limit | 47 Hz |
| permissible frequency range, upper limit | 63 Hz |
| Input current |
| Inrush current, max. | 20 A; at 264 V |
| from supply voltage L1, max. | 120 mA; 15 to 60 mA (240 V); 30 to 120 mA (120 V); output current for expansion modules (5 V DC) 340 mA |
| Encoder supply |
| 24 V encoder supply |
| 24 V | Yes; Permissible range: 20.4 to 28.8 V |
| Short-circuit protection | Yes; electronic at 600 mA |
| Output current, max. | 180 mA |
| Backup battery |
| Battery operation | |
| Backup time, max. | 50 h; (min. 8 h at 40 °C); 200 days (typ.) with optional battery module |
| Memory |
| 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 Kibyte |
| Program memory, max. | 4 Kibyte |
| 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 |
| CPU processing times |
| for bit operations, max. | 0.22 µs |
| Counters, timers and their retentivity |
| S7 counter |
| Number | 256 |
| of which retentive with battery |
| adjustable | Yes; via high-performance capacitor or battery |
| lower limit | 1 |
| upper limit | 256 |
| Counting range |
| lower limit | 0 |
| upper limit | 32767 |
| S7 times |
| Number | 256 |
| of which retentive with battery |
| adjustable | 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/binary inputs | 6; integrated |
| m/p-reading | Yes; optionally, per group |
| Input voltage |
| Type of voltage / of the 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/binary outputs | 4; Relay |
| Functionality/short-circuit strength | No; to be provided externally |
| Switching capacity of the outputs |
| with resistive load, max. | 2 A |
| on lamp load, max. | 30 W DC; 200 W AC |
| Output voltage |
| for signal "1", min. | L+/L1 |
| Output current |
| for signal "1" rated value | 2 A |
| for signal "0" residual current, max. | 0 mA |
| Output delay with resistive load |
| 0 to "1", max. | 10 ms; all outputs |
| 1 to "0", max. | 10 ms; all outputs |
| Parallel switching of 2 outputs |
| for increased power | No |
| Aggregate current of outputs (per group) |
| Digital inputs / Number of inputs that can be driven in parallel / all mounting positions |
| up to 40 °C, max. | 6 A |
| horizontal installation |
| up to 55 °C, max. | 6 A |
| Relay outputs |
| Number of operating cycles | 10000000; mechanically 10 million, at rated load voltage 100,000 |
| 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 BEROS | Yes |
| permissible quiescent current (2-wire BEROS), max. | 1 mA |
| 1st interface |
| Type of interface | 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, max. | 187.5 kbit/s |
| Transmission rate, min. | 19.2 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 |
| 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; Relay |
| between the channels, in groups of | 1 and 3 |
| Permissible potential difference |
| between different circuits | 500 V DC between 24 V DC and 5 V DC; 1500 V AC between 24 V DC and 230 V AC |
| Ambient conditions |
| Environmental conditions | For further environmental conditions, see "Automation System S7-200, System Manual" |
| Operating temperature |
| vertical installation, min. | 0 °C |
| vertical installation, max. | 45 °C |
| horizontal installation, min. | 0 °C |
| horizontal installation, max. | 55 °C |
| Air pressure |
| permissible range, min. | 860 hPa |
| permissible range, max. | 1080 hPa |
| Relative humidity |
| Operation, min. | 5 % |
| Operation, max. | 95 %; RH class 2 in accordance with IEC 1131-2 |
| Degree and class of protection |
| IP20 | Yes |
| Configuration |
| programming |
| Programming language |
| LAD | Yes |
| FBD | Yes |
| STL | Yes |
| 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 |
| 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 |
| Weight |
| Weight, approx. | 310 g |
