# AutomationDirect BX-DM1-36ED2

Hardware · `BX-DM1-36ED2` · verification: source checked

The AutomationDirect BX-DM1-36ED2 is a BRX Do-more programmable logic controller in a stackable micro brick form factor. It provides 20 discrete inputs and 16 sourcing discrete outputs, a serial port, battery-backed retentive memory, a real-time clock and a microSD card slot. It is powered from 120-240 VAC and is programmed in ladder logic with Do-more Designer v2.0 or later.

## Specification

| Property | Value |
|---|---|
| Category | plc |
| Weight | 0.589670081 kg |
| Program memory | 64000 words |
| Data memory | 128000 words |
| Discrete inputs | 20 |
| Discrete outputs | 16 |
| Serial ports | 1 |
| Motion axes | 4 |
| Supply voltage | 120-240 VAC |

## Connected

- Manufacturer: [AutomationDirect](https://machineschema.com/manufacturer/automationdirect.md)
- Protocols: [MODBUS RTU](https://machineschema.com/protocol/modbus-rtu.md)

## Safety

- UL Listed File E185989; CE marked; RoHS compliant.
- Contains an installed button lithium battery (UN3091, lithium content 0.07 g); replacement is D0-MC-BAT, generic CR2032.

## Study notes

- Requires BX-RTB36 or BX-RTB36-1 terminal block kit or ZIPLink pre-wired connection cables.
- Includes BX-RTB03S terminal block and D0-MC-BAT battery.
- Supports up to 8 expansion modules.
- Serial port supports Do-more protocol, Modbus RTU master/slave, ASCII in/out, K-sequence slave, non-secure HTTP webserver, and programming/monitoring at up to 115.2k baud.
- Has 10 high-speed capable input points and 8 high-speed capable output points.
- Motion functions include up to 4 virtual axes; up to 3 PTO step/direction, CW/CCW, or quadrature outputs; and up to 3 PWM outputs.
- High-speed counter support includes up to 3 up, down, up/down, pulse/direction, quadrature, or quadrature-with-Z counters.
- Programming language is ladder; software is Do-more Designer v2.0 or later.
- Includes real-time clock/calendar, retentive memory, battery backup, and MicroSD card slot.

## Sources

1. [BRX Do-more PLC: 20-pt in, 16-pt out, serial port, (programmable logic controller) (PN# BX-DM1-36ED2) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/programmable_controllers/brx_plcs_(stackable_micro_brick)/plcs_-a-_cpus/bx-dm1-36ed2) (accessed 2026-10-26)
2. [BX DM1 36ED2 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/BX-DM1-36ED2_cutsheet.pdf) (accessed 2026-10-26)

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