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AutomationDirect BX-DM1-36ER

The BX-DM1-36ER is a BRX Do-more stackable micro brick programmable logic controller from AutomationDirect. It provides 20 discrete input points (12-24 VAC/VDC, sinking/sourcing) and 16 relay output points, plus an RS-232/RS-485 serial port for programming and communications. It is powered from 120-240 VAC, stores programs in ladder logic, and accepts up to eight expansion modules.

Source checked9/9 values · 2026-10-26AutomationDirectPLC
Weight
0.635kg

Specification

2 sources
Categoryplc
Program memory64,000 words
Data memory128,000 words
Discrete inputs20
Discrete outputs16
Serial ports1
Supply voltage120-240 VAC

Quick answers

How much does the AutomationDirect BX-DM1-36ER weigh?
0.635 kg, per BRX Do-more PLC: 20-pt in, 16-pt out, serial port, (programmable logic controller) (PN# BX-DM1-36ER) | AutomationDirect (automationdirect.com).

Study notes

  • Total memory is 192k words, split into 64k words of ladder memory and 128k words of user data memory.
  • Programs are written in ladder using Do-more Designer programming software v2.0 or later.
  • Retentive memory, a real-time clock/calendar and battery backup are included; a MicroSD card slot is provided for removable media.
  • Serial port is a single RS-232/RS-485 3-pin terminal supporting Do-more protocol, Modbus RTU master/slave, ASCII in/out, K-sequence slave, a non-secure HTTP webserver, and programming/monitoring, at speeds up to 115.2k baud.
  • Up to 8 expansion modules can be added.
  • 10 of the discrete inputs are high-speed capable; frequency response is 250 kHz. High-speed counters are configurable as up to (3) up, (3) down, (3) up/down, (3) pulse/direction, (3) quadrature (A and B) or (3) quadrature (A and B with Z) counters.
  • Inputs are arranged in 5 isolated commons of 4 points each; outputs in 4 isolated commons of 4 points each.
  • Outputs are 16 Form A (SPST) relays rated 2 A per point, with a nominal output voltage of 12-48 VDC / 24-240 VAC.
  • Up to 100+ PID loops, configurable to the memory limit.
  • Interrupts: up to (4) input interrupts, (4) timer interrupts and (4) match register interrupts.
  • The unit ships with a BX-RTB03S terminal block and D0-MC-BAT battery, and requires a BX-RTB36 or BX-RTB36-1 terminal block kit or ZIPLink pre-wired cables.

Safety

  • UL Listed, file # E185989; no UL Recognized or UL Hazardous file.
  • CE declaration available and RoHS status: Yes.
  • Ships with a lithium button cell battery installed (UN3091, packaging instruction 970, lithium content 0.07); replacement battery D0-MC-BAT (CR2032).
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