SIEMENS

Main Functions

PROFIBUS‑DP Bus Communication Gateway Work as PROFIBUS‑DP slave station with RS‑485 physical layer, maximum baud rate up to 12 Mbit/s, support automatic baud‑rate detection. Exchange I/O data between S7‑300/S7‑400 DP master CPU and remote ET200M station; maximum 128‑byte input and 128‑byte output data address range.More products: www.plcva.com
Backplane Bus Management for ET200M Rack Supply 5 VDC backplane bus power (max 1 A) for downstream S7‑300 signal modules. Support up to 8 pieces of S7‑300 series modules (digital I/O, analog I/O, function modules) installed on one ET200M station.

Siemens 6ES7 153‑1AA03‑0XB0

Real‑time I/O Data Forwarding Transmit field digital/analog signals collected by local SM modules to main PLC CPU; convert control commands from master station into backplane bus signals to drive remote I/O modules. Support SYNC / FREEZE synchronization function and direct data exchange between DP slaves.
Hardware Diagnostics & Status Indication Collect diagnostic information of connected I/O modules, detect bus communication failure, module fault and power abnormality. Indicate running status via LED indicators, send diagnostic alarms to upper‑level PLC for troubleshooting in STEP 7 environment.
Field‑side Isolation & Industrial Adaptation 24 VDC power supply, electrical isolation between PROFIBUS‑DP bus and internal logic circuit, IP20 protection grade, designed for cabinet‑mount installation under general factory automation environment.

Siemens 6ES7 153‑1AA03‑0XB0

Distributed I/O for PROFIBUS‑DP System: Deployed as core communication unit of ET200M remote I/O station. Connect field sensors and actuators located far away from main PLC cabinet, realize distributed control instead of long‑distance hard‑wiring of signals.
S7‑300 / S7‑400 PLC Expansion: Cooperate with S7‑300‑2DP or S7‑400 DP master CPU, expand remote digital and analog signal points for production lines, machinery and process equipment.
General Factory Automation: Widely applied in assembly lines, packaging machinery, water treatment, metallurgy auxiliary control and old‑project renovation. Suitable for standard non‑isochronous automation scenarios.
Spare‑part Maintenance: This model is EOL (end‑of‑life) from Siemens official product portfolio, mainly supplied as maintenance spare‑part for existing ET200M running installations to restore remote I/O station function after original module failure.