The Siemens 6AG1810-0AA20-4AA0 SIPLUS ST7 MD2 is a conformal-coated line modem for S7-300 racks, drawing 2.4 W from 24 VDC and communicating over RS232 or RS485 at up to 19.2 kbit/s. It serves point-to-point and multi-point links and can be configured as a repeater. The part is a spare from the standard Siemens offering, with conformal coating for medial-stress environments.
Siemens 6AG1810-0AA20-4AA0 SIPLUS ST7 MD2 Line Modem, 24 VDC
MPN6AG1810-0AA20-4AA0
Siemens SIPLUS ST7 MD2 line modem, 6AG1810-0AA20-4AA0, conformal coating, 24 VDC, 2.4 W, RS232/RS485.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Type of voltage (of the supply voltage) | DC |
| Supply voltage | 24 V |
| For power supply | 4-pole terminal strip |
| S7-300 rail mounting | Yes |
| CLI | No |
| HTTP | No |
| HTTPS | No |
| Design | S7-300 |
| Telnet | No |
| Typical | 2.4 W |
| MIB support | No |
| Transfer rate | 1200 bit/s, 2400 bit/s |
| During storage | -40 ... +70 °C |
| TRAPs via email | No |
| During operation | 0 ... 60 °C |
| Protection class IP | IP20 |
| For internal network | SUB-D |
| Web-Based management | No |
Product details
Frequently asked questions
What are the key electrical ratings for this line modem?
Supply voltage is 24 VDC with typical power consumption of 2.4 W. Transfer rates are 1200 and 2400 bit/s, and the device supports RS232/RS485 interfaces up to 19.2 kbit/s.
How can I source the 6AG1810-0AA20-4AA0?
Submit an RFQ for current pricing and lead time. As a current-lifecycle part, it is available to order through industrial-automation distribution channels. Quantity discounts are negotiable.
MPN
6AG1810-0AA20-4AA0