CB 1241 RS 485 通讯板可用于通过点对点连接进行**、高性能的串行数据交换。
SIEMENS上海楚控自动化设备有限公司(西门子**授权代理商)
询价热线： 15000687827，021-60512610
通讯板 CB 1241 RS 485 采用以下标准协议：
- ASCII:
用于与采用简单传输协议的第三方系统进行接口，例如，带有起始和结束字符或带有块检查字符的协议。接口握手信号可通过用户程序来查询和控制。 - Modbus
用于符合 MODBUS 协议的通讯，具有 RTU 格式：- MODBUS 主站：
以 SIMATIC S7 作为主站的主站-从站接口。 - Modbus 从站:
以 SIMATIC S7 作为从站的主站-从站接口；无法实现从站到从站的报文帧流量。
- MODBUS 主站：
- USS 驱动协议：
特别支持 USS 协议驱动器的连接说明。在这种情况下，驱动程序通过 RS485 交换数据。随后，可以控制这些驱动程序，并可读写参数。
可下载附加驱动器。
参数
STEP 7 Basic 的通信板 CB 1241 的参数化设计极具用户友好性，并极其简单；
通过集成于 STEP 7 Basic 的参数化设置环境，用户可指定模块的属性。
通讯板可直接插到每个 S7-1200-CPU 前面的支架中。
- 安装：
通讯板可直接插到 SIMATIC S7-1200 CPU 中，因此可以电气、机械地连接到 CPU。 - CPU 的安装尺寸保持不变。
- 所有通讯板上的端子均可拆卸，便于更换（“固定接线”）。
Technical Specifications
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Order number |
6ES7241-1CH30-1XB0 |
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COMMUNICATION BOARD CB 1241, RS485 |
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General information |
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Product type designation |
CB 1241 RS485 |
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Input current |
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from backplane bus 5 V DC, typ. |
50 mA |
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Power loss |
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Power loss, typ. |
1.5 W |
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Interfaces |
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Point-to-point |
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1 000 m |
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Integrated protocol driver |
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Yes |
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Yes; Available as library function |
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Yes |
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Yes |
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Yes |
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Yes; Available as library function |
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Protocols |
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Integrated protocols |
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Freeport |
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1 kbyte |
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7 or 8 |
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1 (Standard), 2 |
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No parity (standard); even, uneven, mark (parity bit always 1); space (parity bit always 0) |
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3964 (R) |
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1 kbyte |
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7 or 8 |
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1 (Standard), 2 |
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No parity (standard); even, uneven, mark (parity bit always 1); space (parity bit always 0) |
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Modbus RTU master |
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1 through 49 999 (Standard Modbus addressing) |
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247; slave numbers 1 through 247, per MODBUS network segment maximum 32 devices, additional repeaters needed to expand the network to maximum configuration |
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MODBUS RTU slave |
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1 through 49 999 (Standard Modbus addressing) |
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Interrupts/diagnostics/status information |
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Diagnostic functions |
Yes |
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Degree and class of protection |
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Degree of protection acc. to EN 60529 |
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Yes |
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Standards, approvals, certificates |
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CE mark |
Yes |
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cULus |
Yes |
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FM approval |
Yes |
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RCM (formerly C-TICK) |
Yes |
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KC approval |
Yes |
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Ambient conditions |
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Free fall |
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0.3 m; five times, in product package |
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Ambient temperature during operation |
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-20 °C to +60 °C horizontal mounting, -20 °C to 50 °C vertical mounting, 95% humidity, non-condensing |
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5°C to 55°C, 3°C / minute |
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Ambient temperature during storage/transportation |
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-40 °C |
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70 °C |
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Air pressure acc. to IEC 60068-2-13 |
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795 hPa |
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1 080 hPa |
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660 hPa |
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1 080 hPa |
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Relative humidity |
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95 % |
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Mechanics/material |
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Enclosure material (front) |
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Yes |
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Dimensions |
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Width |
38 mm |
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Height |
62 mm |
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Depth |
21 mm |
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Weights |
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Weight, approx. |
40 g |
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