General information |
Product type designation |
CM 1241 RS 422 / 485 |
Supply voltage |
Rated value (DC) |
|
● 24 V DC |
Yes |
permissible range, lower limit (DC) |
20.4 V |
permissible range, upper limit (DC) |
28.8 V |
Input current |
Current consumption, max. |
220 mA; From backplane bus 5 V DC |
Power loss |
Power loss, typ. |
1.1 W |
Interfaces |
Number of interfaces |
1 |
Interface (physical) RS 422/485 (X.27) |
Yes |
Point-to-point connection |
● Cable length, max. |
1 000 m |
Integrated protocol driver |
— Freeport |
Yes |
— ASCII |
Yes; Available as library function |
— Modbus |
Yes |
— Modbus RTU master |
Yes |
— MODBUS RTU slave |
Yes |
— USS |
Yes; Available as library function |
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 |
Degree of protection acc. to EN 60529 |
|
● IP20 |
Yes |
Standards, approvals, certificates |
CE mark |
Yes |
cULus |
Yes |
FM approval |
Yes |
RCM (formerly C-TICK) |
Yes |
KC 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. |
155 g |
last modified: |
01/31/2019 |