Product Description
Model: 6GK7243‑5DX30‑0XE0 Brand: Siemens Product Name: CM 1243‑5 PROFIBUS‑DP Master Communication Module
6GK7243‑5DX30‑0XE0 is PROFIBUS‑DP master communication module dedicated for SIMATIC S7‑1200 PLC. It is expanded via backplane bus, enabling S7‑1200 to act as DP master for PROFIBUS fieldbus network, supporting DP‑V0 / DP‑V1 protocol. It connects ET200 distributed I/O, DP inverters, DP instruments and other DP‑slave devices. Supports S7 communication and PG/OP online debugging, configured directly within TIA Portal without extra programming. Maximum 3 modules can be used per S7‑1200 CPU. Compact DIN‑rail mounting, widely used as spare part for industrial automation projects.
Technical Specifications
| Item | Specifications |
|---|---|
| Order No. | 6GK7243‑5DX30‑0XE0 |
| Designation | CM 1243‑5 |
| Compatible CPU | Full range SIMATIC S7‑1200 CPU |
| Protocol | PROFIBUS‑DP‑V0 / DP‑V1 (DP Master) |
| Interface | 1 × RS485, 9‑pin Sub‑D female connector |
| Baud Rate | 9.6 kbit/s ~ 12 Mbit/s |
| Max. DP Slaves per module | 16 |
| I/O Data per slave | Max.244 bytes input / 244 bytes output |
| Total module I/O address area | 512 bytes input, 512 bytes output |
| Max.modules per CPU | 3 units |
| Power Supply | DC24V (19.2‑28.8V), power loss 2.4W, typical 0.1A |
| Mounting | 35 mm DIN‑rail, wall‑mount option |
| Dimensions | W30 mm × H100 mm × D75 mm |
| Weight | 0.134 kg |
| Ingress Protection | IP20 |
| Operating Temperature | 0‑55℃(horizontal mounting); 0‑45℃(vertical mounting) |
| Storage / Transport Temperature | -40℃ ~ +70℃ |
| Relative Humidity | Max.95 %, non‑condensing |
| Configuration Tool | TIA Portal (STEP 7) |
Product Application
- Expand PROFIBUS‑DP master interface for S7‑1200 systems, connect ET200M, ET200SP distributed I/O stations.
- Communicate with PROFIBUS‑DP inverters, drives, encoders and field instruments for drive‑system and field‑device integration.
- Legacy‑machine retrofitting, interconnection with existing PROFIBUS fieldbus infrastructure.
- Communication expansion & spare‑part replacement for manufacturing lines, water treatment, metallurgy and logistics automation projects.
Main Series Part Numbers
- 6GK7242‑5DX30‑0XE0 CM1242‑5 PROFIBUS‑DP Slave Module
- 6GK7243‑5DX30‑0XE0 CM1243‑5 DP Master Module (this item)
- 6ES7241‑1AH32‑0XB0 CM1241 RS232 Serial Module
- 6ES7241‑1CH32‑0XB0 CM1241 RS485 Serial Module
- 6GK7542‑5DX00‑0XE0 CM1542‑5 S7‑1500 DP Slave Module
- 6GK7543‑5DX00‑0XE0 CM1543‑5 S7‑1500 DP Master Module
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