| Article number | 6ES7241-1CH30-1XB0 |
| Communication Board CB 1241, RS485 |
| General information |
|
| Product type designation | CB 1241 RS 485 |
| Input current |
|
| from backplane bus 5 V DC, typ. | 50 mA |
| Power loss |
|
| Power loss, typ. | 1.5 W |
| Interfaces |
|
| Point-to-point connection |
|
| ·
● Cable length, max. · | 1 000 m |
| Integrated protocol driver |
|
| ·
— Freeport · | Yes |
| ·
— ASCII · | Yes; Available as library function |
| ·
— 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 |
| Degree and class of protection |
|
| IP degree of protection | IP20 |
| Dimensions |
|
| Width | 38 mm |
| Height | 62 mm |
| Depth | 21 mm |
| Weights |
|
| Weight, approx. | 40 g |
