Ports Configuration

The below numbers should be used inside the Configurator when using one of the ports on the Compact:

  • RS-232 (DB9): use 0.
  • USB: use 10.



Compact's DB9 Serial Port

Compact's DB9 Serial Port


Pin Signal Name Type
1 DCD Data Carrier Detect Input
2 RxD Receive Data Input
3 TxD Transmit Data Output
4 DTR Data Terminal Ready Output
5 GND Signal Ground -
6 DSR Data Set Ready Input
7 RTS Request to Send Output
8 CTS Clear to Send Input
9 RI Ring Indicator Input

The below numbers should be used inside the Configurator when using one of the ports on the Rack:

  • RS-232 (DB9) x2: use 0 and 1. Consult the Compact's image for reference.
  • Additional green ports (RS-232 and RS-485): use 2 and 3.
  • USB: use 10.

The additional green ports on the Rack can be used either for RS-232 or RS-485. Consult the picture below for a proper connection.

Rack's Green Ports

Rack's Green Ports

The below numbers should be used inside the Configurator when using one of the ports on the Brickbox:

  • RS-232: use 4.
  • RS-485: use 5.



Brickbox's Ports

Brickbox's Ports


RS-485 RS-232
Pin Description Pin Description
1 GND - Ground 4 GND - Ground
2 Data A (D+) 5 CTS - Clear To Send (input)
3 Data B (D-) 6 RTS - Request To Send (output)
7 RX - Receive Data (input)
8 TX - Transmit Data (output)

The below numbers should be used inside the Configurator when using one of the ports on the Envision_20:

  • RS-232: use 1.
  • RS-485: use 2.
  • USB: use 10.

Envision's Ports

Envision's Ports


RS-485 RS-232
Pin Description Pin Description
1 Data A (D+) 3 GND - Ground
2 Data B (D-) 4 TX - Transmit Data (output)
5 RX - Receive Data (input)

The below numbers should be used inside the Configurator when using one of the ports on the Compact_20:

  • RS-232: use 4.
  • RS-485: use 5.
  • USB: use 10.

Compact_20 front and back panel

Compact_20 Front/Back Panels

Compact_20 RS-485

Compact_20 RS-485


RS-485
Pin Description
1 Data A (D+)
2 Data B (D-)
3 GND - Ground

Compact_20 RS-232 and digital inputs

Compact_20 RS-232 + Digital Inputs


RS-232 Dig. Inputs
Pin Description Pin Description
1 GND - Ground 4 Digital IN1
2 RX - Receive Data (IN) 5 Digital IN2
3 TX - Transmit Data (OUT)

Compact_20 Analog/Digital inputs

Compact_20 Analog/Digital Inputs


Analog/Digital Inputs
Pin Description
1 Input 1
2 Input 2
3 Input 3
4 Input 4
5 Input - GND

Compact_20 Relays 1-2

Compact_20 Relays 1-2


Relays 1-2
Pin Description
1 Common R1
2 Relay 1 (N.O.)
3 Common R2
4 Relay 2 (N.O.)

Compact_20 Relays 3-4

Compact_20 Relays 3-4


Relays 3-4
Pin Description
1 Common R3
2 Relay 3 (N.O.)
3 Common R4
4 Relay 4 (N.O.)

Compact_20 Digital Outputs

Compact_20 Digital Outputs


Digital Outputs (open collector)
Pin Description
1 Supply
2 Output 1
3 Output 2
4 Output 3
5 GND - Ground

The below numbers should be used inside the Configurator when using one of the ports on the Micro_20:

  • USB: use 10.

Connecting a DCE device with DB9

A DCE device usually has the pins TX and RX inverted (TX on pin 2, RX on pin 3).
Connecting Brickbox to Paradox DB9 port

Connecting Brickbox to Paradox DB9 port

Transforming a green block into DB9

Transforming Envision port to DB9 port

Transforming Envision port to DB9 port