Siemens 6ED1052-1FB08-0BA1 Micro PLC

Ordine n.: 6ED1052-1FB08-0BA1

Serie: LOGO! 8.3, intelligent logic controller with display

Stato: Interrotto (Mar 07, 2024)

Sostituzione: 6ED1052-1FB08-0BA2 (LOGO!8.4, MQTT supported)

✅ Key Specifications

Alimentazione elettrica: AC/DC 115～230V (100–253V wide range)

Ingressi: 8 ingressi digitali (DI), no built-in analog channels

Uscite: 4 uscite relè (FARE), massimo. 10Uno per canale

Capacità del programma: 400 blocchi funzione

Comunicazione: Integrated Ethernet LAN port, built-in web server, registrazione dei dati, cloud connection

Magazzinaggio: MicroSD card support for program backup, log export and firmware update

HMI: On-board LCD and operation keys, local programming and monitoring available

Espansione: Compatible with full LOGO! moduli di espansione (digitale, analogico, TDE text display)

Software di programmazione: LOGO!Soft Comfort V8.3 or higher

Montaggio: Norma su guida DIN

📌 Order Code Breakdown

6ED1052: LOGO! unità base

1FB08: 230Alimentazione V, uscita relè, con display, 8DI/4DO; 08 = LOGO!8 piattaforma hardware

0BA1: Identificatore della versione (8.3); 0BA2 = 8.4; 0BA3 = enhanced new version (800 blocchi funzione)

📎 Replacement Differences

6ED1052-1FB08-0BA2: Fully compatible I/O hardware, newly added MQTT protocol. Requires V8.4+ software. Existing programs can be migrated directly. Pinout is identical for cabinet drop-in replacement.

Next geneation: 6ED1052-1FB08-0BA3, expanded to 800 blocchi funzione, touchscreen variant.

🛠️ Typical Applications

Ventilatori HVAC, pompe dell'acqua, lighting sequence control, shutters/roller doors, small conveying equipment, stazioni di pompaggio, simple constant temperature & humidity control, local building interlock, replacing traditional time relays and intermediate relay circuits.

⚠️ Sourcing Notes

No new production from OEM. Available stock consists of surplus spares or used units. Per nuovi progetti, select 0BA2 by default.

Note sulla migrazione: LOGO! 6ED1052-1FB08-0BA1 (8.3) → 0BA2 (8.4)

Assegnazione dei pin, dimensione di montaggio, I/O count and power rating are identical. Wiring can remain unchanged without terminal modification. Main risks lie in software version, project conversion, comunicazione, web pages, SD card, TDE and the newly added MQTT.

1. Mandatory Software Version Requirements (Most Common Pitfall)
2. LOGO!Soft Comfort V8.4 (with V8.4.1 patch) è obbligatorio. V8.3 software cannot recognize or download programs to 0BA2 units.
3. Recommended workflow:

Upload and back up the original program from 0BA1 using V8.3. Save the raw `.lld` file permanently and do not overwrite it.

Open the project in V8.4, go to Tools → Change Device, target hardware: `LOGO! 230RCE 6ED1052-1FB08-0BA2`

Save as V8.4 format `.lsc`. Projects saved in V8.4 cannot be opened in V8.3. Keep the original backup separately.

3. Do not copy program files directly from the 0BA1 SD card to 0BA2: program files are version-incompatible and will trigger errors. Ethernet download is preferred.
4. Programma & Function Block Compatibility (Most Standard Logic Works)

✅Compatibile: Temporizzatori, contatori, comparatori, funzioni analogiche, relay logic, pulse generators, registrazione dei dati, ModBus TCP (client/server), UDF user-defined function blocks

⚠️ Items to verify:

1. Custom Web Pages (LOGO! Web Editor)

0BA1 pairs with LWE V1.1; 0BA2 requires LWE V1.2.1

Old web projects may have abnormal variable IDs, layout or refresh rate after import. Always test web pages online after download. MQTT tags are invisible on legacy web pages and need reconfiguration.

2. Registrazione dei dati: CSV log format is compatible, but parsing rules for negative values and timestamps are slightly adjusted. Verify logs after running for a period.
3. Protezione con password: Project passwords carry over during migration. Upload is impossible if the password is lost. Confirm the password before migration.
4. Function block limit: Both versions support 400 blocchi, no capacity shortage.
5. Communication Focus (MQTT exclusive to 0BA2; Modbus TCP unchanged)
6. ModBus TCP: Register mapping, IP, porta, slave ID and timeout parameters generally remain unchanged. Read/write tests are mandatory after replacement. IL 8.4 firmware fixes certain abnormal Modbus frames. Some older HMI/SCADA may experience intermittent disconnection; increase timeout on the master side.
7. MQTT is only available on 0BA2: 0BA1 has no MQTT function. Ignore if your original project does not use MQTT. Add MQTT client configuration within V8.4 if cloud connectivity is required later.
8. IP Address: Reuse the original IP, subnet mask and gateway to minimize changes to SCADA, HMI and touch panels. Factory default IP matches 0BA1, but connect via PC directly to set IP before powering on in the system to avoid IP conflict.
9. Ethernet MAC address changes: Update MAC binding rules if your master system uses MAC whitelisting.
10. Moduli di espansione & TDE Text Display

Moduli di espansione (6ED1055 suffix 0BA2): Pienamente compatibile, no replacement required, backplane bus is identical.

TDE text display (6ED1055-4MH08-0BA0/0BA1): Works with 0BA2 host. Re-download TDE configuration in V8.4, otherwise texts and variables will fail to refresh.

Nota: TDE designed for 0BA3 (LOGO!9) cannot be used with 0BA2.

5. SD Card Notes

Format remains FAT32, standard MicroSD card supported.

Program files stored on the 0BA1 SD card cannot run directly on 0BA2. SD cards are only used for 0BA2 backup, firmware upgrade and log export within V8.4 environment.

Firmware: 0BA2 only accepts V8.4 firmware packages. 8.3 firmware cannot be flashed. Place firmware file in root directory without renaming.

6. Recommended On-site Replacement Procedure to Reduce Downtime Risk
7. Before shutdown: Upload full program from 0BA1 with V8.3 and save raw backup. Record IP, Modbus register map, web pages, TDE texts, real-time clock and daylight saving settings.
8. Spegnimento, remove 0BA1 and install 0BA2. Terminals are pin-to-pin compatible with no wiring changes.
9. Open converted project in V8.4 and confirm hardware model is updated to 0BA2.
10. Disconnect field loads first, power on, download program, verify RTC, DI status and DO logic.
11. Test all communications: ModBus, web server and TDE display.
12. Enable field loads only after offline logic validation. Run continuously for 30 minutes to check timing stability and communication drops.
13. Create a local SD card backup on the new 0BA2 unit.
14. Common Errors & Risoluzione dei problemi
15. Download error [Device type mismatch]: The project hardware is still set to 0BA1. Change device model in software.
16. V8.3 cannot open converted project: Expected version isolation. Only the original `.lld` backup can be opened in V8.3.
17. Blank web page / stale variables: LWE version mismatch. Reopen web project in V1.2.1 and download again.
18. Intermittent Modbus disconnection: Increase master communication timeout or upgrade 0BA2 firmware to latest V1.84.03.
19. TDE display not updating: Re-download TDE configuration, do not download host program only.
20. Is Program Modification Required?

Pure logic, tempistica, illuminazione, pump and fan interlock: No program modification required for direct migration.

Projects with Modbus acquisition, web monitoring or TDE display: Full communication and screen validation is mandatory.

Cloud / MQTT deployment: Add MQTT client configuration after migration in V8.4.

LOGO!8 Host List (6ED1052-xxx08)

Two types: Basic with display (prefix 1) and Pure o-type without display (prefix 2). Suffix version: 0BA0(8.2), 0BA1(8.3 interrotto), 0BA2(8.4 active), 0BA3(LOGO!9 new release).

1. Regole del codice d'ordine

6ED1052 1FB08 0BA1

1. 7th character: 1 = with LCD display; 2 = o-type without display
2. Codice di potenza:

MD = 12/24VDC

CC = 24VDC transistor output (CE)

HB = 24V AC/DC relay output (RCE)

FB = 230V AC/DC relay output (RCE, il tuo modello)

3. 08 = LOGO!8 piattaforma hardware
4. Suffix 0BAx = firmware version:

0BA0: 8.2

0BA1: 8.3 (interrotto, your original unit)

0BA2: 8.4 (MQTT supported, drop-in replacement for 0BA1)

0BA3: LOGO!9, fino a 800 blocchi funzione

2. Basic Units with Display (Prefisso 1)

230RCE (AC/DC 115–230V, 8DI/4 relay 10A, il tuo modello)

6ED1052-1FB08-0BA0 (8.2)

6ED1052-1FB08-0BA1 (8.3, interrotto, modello originale)

6ED1052-1FB08-0BA2 (8.4, sostituzione diretta, MQTT)

6ED1052-1FB08-0BA3 (LOGO!9 migliorato)

24RCE (CA/CC 24 V, uscita relè)

6ED1052-1HB08-0BA0 / 0BA1 / 0BA2 / 0BA3

12/24RCE (DC12–24V, uscita relè, 4 channels configurable as AI)

6ED1052-1MD08-0BA0 / 0BA1 / 0BA2 / 0BA3

24CE (DC24V, transistor 0.3A, 4 built-in AI inputs)

6ED1052-1CC08-0BA0 / 0BA1 / 0BA2 / 0BA3

3. Pure o-type without Display (Prefisso 2)

230RCEo (no-display counterpart of your model)

6ED1052-2FB08-0BA0 / 0BA1 / 0BA2 / 0BA3

24RCEo

6ED1052-2HB08-0BA0 / 0BA1 / 0BA2 / 0BA3

12/24RCEo

6ED1052-2MD08-0BA0 / 0BA1 / 0BA2 / 0BA3

24CEo

6ED1052-2CC08-0BA0 / 0BA1 / 0BA2 / 0BA3

4. Version Comparison Table

5. Compatible Expansion Modules (Common for 0BA0/1/2)

Digital expansion DM8 / DM16:

6ED1055-1FB00-0BA2 (DM8230R, 4DI+4DO relay)

6ED1055-1HB00-0BA2 (DM824R)

6ED1055-1CB00-0BA2 (DM8 24V transistor)

Analog expansion AM2:

6ED1055-1MA00-0BA2 (AM2 analog input)

6. TDE Text Display

6ED1055-4MH08-0BA1 (works with 0BA1 / 0BA2 host)

7. Sourcing Recommendation for 6ED1052-1FB08-0BA1
8. Spare replacement: Purchase 6ED1052-1FB08-0BA2. Wiring unchanged; only switch hardware model in V8.4.
9. New project expansion: Select 0BA3 for larger program capacity.