====== Serial converter ======

**RS232 to RS485 converter**

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| Model number: ^ CAD-232-A2-IQ       |
| Mounting:     | DIN rail, 2M, 36 mm |
| Dimensions:   | 36x99x58 mm         |

===== Applications =====

  * Connecting power sensor and other RS-485 devices to HC/MC (Home Controller/Master Controller)

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===== Installation =====

  * :!: Place CAD-232-A2-IQ module on DIN rail next to Home Controller
  * Connect enclosed red cable between COM1 port on Home Controller and one of RS232 port at bottom side of CAD-232-A2-IQ module
  * Connect RS485 terminals to SDM-120-C RS485 terminals
    * A - A
    * B - B
    * C - GND



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===== Features =====

  *  2 x RS232 channel
  * galvanic isolated A-bus lines from RS232
  * LED signalization for data flow
  * push and click mounting on DIN rail
  * small dimensions
  * removable RS485 terminal
  * 24V DC powered over IEX-2 bus


===== General description =====

**Power meter converter** is RS232 to RS485 converter used to connect [[en:hiq_hw:pm1-e-d|PM1-E-D]] and other power sensors to Home Controller.

===== Technical specification =====

| Power supply:          |                                24V/50mA |
| Galvanic isolation:    |  RS485 is galvanic isolated from circuit |
| Ingress protection:    |                                    IP20 |
| Operating temperature: |                                 0..50°C |
| Storage temperature:   |                               -20..75°C |
| Relative humidity:     |                              0..85% n/c |

===== Terminals ===== 

| To power sensor ^ A | RS485 bus  |
| :::            ^ B | :::        |
| :::            ^ C | :::        |