| Article number |
6ES7241-1AH32-0XB0
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SIMATIC S7-1200, Communication module CM 1241, RS232, 9-pole D-sub (pin), supports Freeport |
| General information |
| Product type designation |
CM 1241 RS 232 |
| Supply voltage |
| Rated value (DC) |
24 V |
| permissible range, lower limit (DC) |
20.4 V |
| permissible range, upper limit (DC) |
28.8 V |
| Input current |
| Current consumption, max. |
200 mA; From backplane bus 5 V DC |
| Power loss |
| Power loss, typ. |
1.1 W |
| Interfaces |
| Interfaces/bus type |
RS 232C (V.24) |
| Number of interfaces |
1 |
| Point-to-point connection |
| ● Cable length, max. |
10 m |
| Integrated protocol driver |
| — Freeport |
Yes |
| — ASCII |
Yes; Available as library function |
| — Modbus RTU master |
Yes |
| — MODBUS RTU slave |
Yes |
| Protocols |
| Integrated protocols |
| Freeport |
| — Telegram length, max. |
1 kbyte |
| — Bits per character |
7 or 8 |
| — Number of stop bits |
1 (Standard), 2 |
| — Parity |
No parity (standard); even, uneven, mark (parity bit always 1); space (parity bit always 0) |
| 3964 (R) |
| — Telegram length, max. |
1 kbyte |
| — Bits per character |
7 or 8 |
| — Number of stop bits |
1 (Standard), 2 |
| — Parity |
No parity (standard); even, uneven, mark (parity bit always 1); space (parity bit always 0) |
| Modbus RTU master |
| — Address area |
1 through 49 999 (Standard Modbus addressing) |
| — Number of slaves, max. |
247; slave numbers 1 through 247, per MODBUS network segment maximum 32 devices, additional repeaters needed to expand the network to maximum configuration |
| MODBUS RTU slave |
| — Address area |
1 through 49 999 (Standard Modbus addressing) |
| Interrupts/diagnostics/status information |
| Diagnostics function |
Yes |
| Diagnostics indication LED |
| ● for status of the outputs |
Yes |
| Degree and class of protection |
| IP degree of protection |
IP20 |
| Standards, approvals, certificates |
| CE mark |
Yes |
| CSA approval |
Yes |
| UL approval |
Yes |
| cULus |
Yes |
| FM approval |
Yes |
| RCM (formerly C-TICK) |
Yes |
| KC approval |
Yes |
| Marine approval |
Yes |
| Ambient conditions |
| Free fall |
| ● Fall height, max. |
0.3 m; five times, in product package |
| Ambient temperature during operation |
| ● min. |
-20 °C |
| ● max. |
60 °C |
| ● horizontal installation, min. |
-20 °C |
| ● horizontal installation, max. |
60 °C |
| ● vertical installation, min. |
-20 °C |
| ● vertical installation, max. |
50 °C |
| ● permissible temperature change |
5°C to 55°C, 3°C / minute |
| Ambient temperature during storage/transportation |
| ● min. |
-40 °C |
| ● max. |
70 °C |
| Air pressure acc. to IEC 60068-2-13 |
| ● Operation, min. |
795 hPa |
| ● Operation, max. |
1 080 hPa |
| ● Storage/transport, min. |
660 hPa |
| ● Storage/transport, max. |
1 080 hPa |
| Relative humidity |
| ● Operation at 25 ℃ without condensation, max. |
95 % |
| Dimensions |
| Width |
30 mm |
| Height |
100 mm |
| Depth |
75 mm |
| Weights |
| Weight, approx. |
150 g |