Description
HIMA F8628X | PROFIBUS-DP Communication Module | H41q/H51q Safety System
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | HIMA Paul Hildebrandt GmbH + Co. KG |
| Model | F8628X |
| Part number | 98 4862865 / 984862865 |
| Product family | H41q / H51q |
| Module type | Communication module |
| Primary protocol | PROFIBUS-DP slave |
| PROFIBUS interface | 9-pin SUB-D |
| Ethernet interface | 100BASE-T, RJ45 |
| Ethernet function | ELOP II programming / TCP access on supported OS versions |
| PROFIBUS-DP mode | Slave |
| PROFIBUS address | 0–125 via front-panel switch settings |
| Form factor | 19-inch module |
| Height | 3 HU |
| Width | 4 WU |
| Typical operating data | 5 V / 2 A system data reported in HIMA documentation |
| Host systems | H41q / H51q |
| Safety certification | F8628X is listed in HIMA safety-system certification documentation |
| Exact fieldbus baud-rate limits | Verify against the installed H41q/H51q documentation |
HIMA’s documentation identifies F8628X as the communication module for PROFIBUS-DP, while the related F8627X provides Ethernet-oriented communication functions. HIMA’s product information also specifies the F8628X as a 19-inch module measuring 3 height units by 4 width units.
Product Introduction
The HIMA F8628X is a dedicated communication module for H41q and H51q programmable electronic safety systems. Its principal function is to make the safety controller available as a PROFIBUS-DP slave, allowing a PROFIBUS-DP master to exchange mapped HIMA controller variables with the PES.
The module also incorporates a 100BASE-T Ethernet interface. On supported operating-system versions, this Ethernet connection permits ELOP II engineering/programming access to the controller. HIMA documentation notes that ELOP II TCP support begins with the applicable version 4.x operating systems.

F8628X
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
The sits at the communication boundary of an older HIMA safety controller, so replacement compatibility depends on more than the physical card. The H41q/H51q CPU generation, operating-system version, PROFIBUS configuration, module address and redundancy arrangement all need to be considered.
Typical Applications
- H41q safety controllers — PROFIBUS-DP communication with supervisory or control-system equipment.
- H51q safety controllers — network integration of safety-controller data through PROFIBUS-DP.
- Legacy process-safety systems — maintaining existing HIMA PES installations without changing the communication architecture.
- ELOP II engineering access — Ethernet-based programming/diagnostic access where the installed operating system supports ELOP II TCP.
Technical Pitfalls to Avoid
- Do not confuse with F8627X. HIMA specifically assigns to PROFIBUS-DP slave communication, while F8627X is the Ethernet communication module for functions such as safeethernet, OPC and MODBUS-TCP.
- Verify the PROFIBUS address before commissioning. HIMA documentation states that switches S1/1–7 are used to set the PROFIBUS-DP slave address from 0 to 125.
- Check the HSR connection in redundant systems. HIMA’s replacement procedure specifies the Ethernet and HSR connections and notes that, in a redundant H41q/H51q controller, the HSR connection is necessary for access to the redundant central module.
- Do not use generic communication-module specifications. Some current listings incorrectly describe as a MODBUS-RTU/TCP module, 230 VAC device, or generic Ethernet controller. Those descriptions conflict with HIMA’s documentation and should not be used for procurement.
- Check operating-system compatibility. ELOP II TCP functionality depends on the H41q/H51q operating-system version; communication behavior should be verified against the actual installed system revision.
Related Products
- HIMA F8627X — Ethernet communication module for H41q/H51q systems; supports different communication functions from the .
- HIMA F8628 — earlier F8628 PROFIBUS-DP communication module; verify hardware and software compatibility before substituting the X version.
- HIMA F8650X — H41q/H51q safe CPU family used with the newer communication architecture.
- HIMA F8652X — safe CPU for H51q/H41q systems and an associated product in the documentation.
- HIMA F8651X — non-safe CPU associated with the same H41q/H51q communication-module generation.
- HIMA F8653X — non-safe CPU associated with the F8627X/ generation.
- HIMA F8621A — HIMA coprocessor module; different system function from .
- HIMA F8620/11 — earlier HIMA communication/processor hardware; compatibility must be checked against the specific H41q/H51q architecture.
Procurement Note
For a replacement, specify the complete identification:
HIMA — 98 4862865 / 984862865 — PROFIBUS-DP Communication Module.
Before installation, verify the H41q/H51q controller type, CPU revision, operating-system version, PROFIBUS master configuration, slave address, baud rate, HSR/redundancy wiring and ELOP II version.
The most important distinction is:
is a PROFIBUS-DP slave communication module, not a CPU, digital I/O module, or generic Ethernet communication card. HIMA’s own documentation and certification records support this classification.
