Siemens 6GK7243-5DX30-0XE0 Module
A SIMATIC S7-1200 communication module that controls a PROFIBUS DP network as the DP-V1 master for as many as sixteen configured slaves.
Product Identification
6GK7243-5DX30-0XE0 is the CM 1243-5 PROFIBUS master for SIMATIC S7-1200. It provides DP-V1 master operation, PG/OP communication and S7 communication through an electrically isolated RS-485 interface with a 9-pin Sub-D connection.
The module is engineered in STEP 7 and powered from an external 24 V DC source. Its role, slave configuration and network timing are different from the CM 1242-5 slave module, so the two similar enclosures are not interchangeable.
Confirm the complete MLFB, configured slave list, bus profile, module firmware and installed software release together before approving a replacement.
Engineering Data
- PROFIBUS role
- DP-V1 master
- Maximum DP slaves
- 16
- Transmission range
- 9.6 kbit/s to 12 Mbit/s
- Interface
- Electrically isolated RS-485, 9-pin Sub-D
- External supply
- 24 V DC, permissible deviation −20% / +20%
- Typical current consumption
- 0.1 A
- Typical power loss
- 2.4 W
- Degree of protection
- IP20
- Engineering platform
- STEP 7 Basic V11 or later for full configuration
- Lifecycle signal
- Siemens SiePortal lists Phase Out Announce
Functions
Control the bus
Schedules cyclic data exchange with the configured PROFIBUS DP slaves as the station master.
Access diagnostics
Exposes module and slave states for engineering, commissioning and network fault isolation.
Support services
Provides DP-V1 functions plus PG/OP and S7 communication within the published module capability.
About IndustryParts
https://www.industryparts.com/Controlled handling for 6GK7243-5DX30-0XE0
IndustryParts keeps the submitted 6GK7243-5DX30-0XE0 identity, requested quantity and installed-system evidence together so a proposed supply can be checked before dispatch.
- Suffix and MOD identity kept visible
- Mating hardware recorded before supply
- Acceptance evidence linked to the order
Applications
S7-1200 PROFIBUS master stations
Machines that retain field drives, remote I/O or instruments on a documented DP network.
Controlled legacy integration
Projects connecting a newer S7-1200 controller to established PROFIBUS equipment without changing every field node.
Service spares
Existing systems where the master MLFB, STEP 7 project and slave GSD records must be kept together.
Lifecycle
Back up
Archive the complete STEP 7 project, module firmware record, master address, bus parameters and all slave definitions.
Review
Because Siemens signals Phase Out Announce, compare the installed lifecycle plan and available migration instructions before approving a long-term spare.
Exchange
Isolate supply and network, preserve shielding and connector termination, then install the exact master module.
Validate
Confirm every configured slave returns to data exchange and that alarms, diagnostics and process values match the baseline.
FAQ
How many slaves can 6GK7243-5DX30-0XE0 control?
Siemens specifies a maximum of sixteen PROFIBUS DP slaves for the CM 1243-5 master.
Can 6GK7243-5DX30-0XE0 replace a CM 1242-5?
No. The CM 1243-5 is a DP-V1 master, while the CM 1242-5 connects the S7-1200 as a DP slave.
What should accompany a 6GK7243-5DX30-0XE0 request?
Provide the complete MLFB, STEP 7 version, module firmware, master address, bus rate, slave list and network drawing.
Why should lifecycle status be reviewed for 6GK7243-5DX30-0XE0?
Siemens SiePortal identifies the product with a Phase Out Announce signal, so spare and migration planning should be documented.
What proves 6GK7243-5DX30-0XE0 is ready after service?
Every configured slave must reach data exchange and the project must show the expected process data, diagnostics and alarm behavior.
