CM 1241 RS485

Name: CM 1241 RS485
Brand: Siemens

Siemens SIMATIC S7-1200 Comm module expansion module. Article number 6ES7241-1CH32-0XB0. RS-485 serial, Modbus / USS / Freeport. Mounts on the right side of any S7-1200 CPU and is hot-pluggable when used as a signal board. 西门子 SIMATIC S7-1200 通讯模块扩展模块,订货号 6ES7241-1CH32-0XB0。RS-485 serial, Modbus / USS / Freeport。安装于 S7-1200 CPU 右侧,信号板形态支持热插拔,在 TIA Portal V14 SP1 及以上自动识别。

Specifications · 技术参数

Verified data

Parameter	OEM · Siemens CM 1241 RS485	Replacement · Schneider TM3DI8 / TM3DQ8T
Type / 模块类型	Comm module / 通讯模块	Comm module / 通讯模块✓ match
Article No. / 订货号	6ES7241-1CH32-0XB0	n/a
Specification / 规格	RS-485 serial, Modbus / USS / Freeport	RS-485 serial, Modbus / USS / Freeport✓ match
Supply / 电源	24V DC (from CPU bus)	24V DC (external)
Mounting / 安装	S7-1200 right-side bus	DIN rail

Installation & Maintenance Tips

Up to 8 SM modules can be added per CPU 1214/1215/1217. Signal boards do not occupy a slot. / CPU 1214/1215/1217 最多可扩展 8 个 SM 模块,信号板 (SB) 不占槽位。
For 4-20mA loops, set the channel type to current in TIA Portal AND set the DIP switch on the module side. / 4-20mA 信号请在 TIA Portal 设置通道为电流型,同时拨动模块侧面 DIP 开关。
Always wire the M (ground) reference on analog modules to avoid floating-input noise. / 模拟量模块必须可靠连接 M(参考地)端子,否则输入悬浮易受干扰。

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Cross Reference · 替代件交叉引用

Brand	Equivalent Model	Notes
Schneider	TM3DI8 / TM3DQ8T	Equivalent function on M221/M241 PLCs. / 适用于 M221/M241 PLC 的等效模块。
Mitsubishi	FX5-16ER/ES	Comparable I/O density on FX5U/iQ-F. / FX5U / iQ-F 系列 I/O 密度接近。
Inovance	GL10-1600ETN	Domestic alternative; check engineering tool support. / 国产替代品,请确认工程工具支持。

Error Codes & Troubleshooting · 故障码排查

Code	Meaning	Suggested Action
0x80B2	Diagnostic: module not present / 诊断:模块不在线	Check bus connector and 24V supply / 检查总线插针与 24V 电源。
F0001	Wire break / 断线	Verify channel wiring and burden resistor / 检查通道接线和负载电阻。
F0002	Short circuit to M / 对地短路	Disconnect field wiring to isolate / 断开现场接线定位短路点。
F0003	Out-of-range high / 上限超量程	Confirm signal range matches channel config / 核对量程与通道组态一致。

Datasheet PDF Download · 数据手册下载

6ES7241-1CH32-0XB0_datasheet.pdf · 64 页 · EN / DE / 中文

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