| SIMATIC S7-1200, Communication Board CB 1241, RS-485, junction box, support free port |
general information |
product Type mark | CB 1241 RS485 |
input current |
DC 5V from backplane bus, typical value | 50 mA |
power loss |
power loss, typical | 1.5W |
interface |
point-to-point |
● wire length, maximum | 1 000 m |
integrated Protocol driver |
-Free port | yes |
-ASCII | yes; Available as a library function |
-Modbus | yes |
-Modbus RTU master station | yes |
-Modbus RTU slave station | yes |
-USS | yes; Available as a library function |
agreement |
integration protocol |
free Port |
-Message length, maximum | 1 kbyte |
-The number of digits per character | 7 or 8 |
-Number of stop bits | 1 (standard),2 |
-Parity check | (Default standard) no parity; Positive, odd, and marked (parity bit is always 1); Blank (parity bit is always 0) |
3964 (R) |
-Message length, maximum | 1 kbyte |
-The number of digits per character | 7 or 8 |
-Number of stop bits | 1 (standard),2 |
-Parity check | (Default standard) no parity; Positive, odd, and marked (parity bit is always 1); Blank (parity bit is always 0) |
Modbus RTU master station |
-Address Range | 1 to 49 999 (standard Modbus addressing) |
-Number of slave stations, maximum | 247; From station number 1 to 247, each MODBUS network segment can contain up to 32 devices. More than repeater is required to extend the network to the maximum configuration. |
Modbus RTU slave station |
-Address Range | 1 to 49 999 (standard Modbus addressing) |
alarm/diagnosis/status information |
diagnostic function | yes |
protection level and protection category |
protection level in accordance with EN 60529 | |
● IP20 | yes |
standards, licenses, certificates |
CE Mark | yes |
cULus | yes |
FM license | yes |
RCM(C-TICK format) | yes |
KC license | yes |
environmental requirements |
open Air |
● maximum drop | 0.3 m; Five, in the shipping package |
operating ambient temperature |
● minimum | -20°C |
● maximum value | 60°C |
● horizontal installation, minimum | -20°C |
● horizontal installation, maximum | 60°C |
● vertical installation, minimum | -20°C |
● vertical installation, maximum | 50°C |
● allow temperature change | 5°C to 55°C,3°C/minute |
ambient temperature during transportation/storage |
● minimum | -40°C |
● maximum value | 70°C |
air pressure meets IEC 60068-2-13 standard requirements |
● operation, minimum | 795 hPa |
● operation, maximum | 1 080 hPa |
● storage/transportation, minimum | 660 hPa |
● storage/transportation, maximum | 1 080 hPa |
relative air humidity |
● non-condensing operation at 25°C, maximum | 95% |
machinery/materials |
shell material (front) | |
● Plastic | yes |
size |
width | 38 mm |
height | 62 mm |
depth | 21 mm |
weight |
weight, about | 40g |