DM-xx modules of remote I/O with ARION protocol
The extension modules of the DM-xx series with ARION protocol have their own ‘intelligence’ – they are able to detect when communication is cut off and set the output signals to a pre-defined setting in such cases. The I/O modules on offer can be single-type (one type of I/O signal) or combined.
Modules of the DM-xx series were completely replaced by modules of the AMRIO series.
An overview of the I/O extension modules with ARION protocol
| DM-DI24 | 24× digital input 24 V DC / AC, galvanic isolation |
| DM-DO18 | 18× digital output 24 V DC, 300 mA, galvanic isolation |
| DM-RDO12 | 12× switching relay 250 V / 6 A |
| DM-AI12 | 12× analogue input 0 V to 5 V, 0V to 10 V, 0 mA to 20 mA, Ni1000 / Pt1000, 12 bits |
| DM-AO8U | 8× analogue output 0 V to 10 V, resolution 12 bits |
| DM-AO8I | 8× analogue output 0 V to 20 mA, resolution 12 bits |
| DM-PDO6NI6 | 6× Ni1000, 6× digital input 24 V DC, 1 A, galvanic isolation |
| DM-UI8DO8 | 8× universal input*), 8× digital output 24 V DC, 300 mA, galvanic isolation |
| DM-UI8RDO8 | 8× universal input*), 8× switching relay 230 V AC / 24 V DC / 2 A |
| DM-UI8AO8U | 8× universal input*), 8× analogue output 0 V to 10 V, resolution 12 bits |
*) 0 to 5 V / 0 to 10 V / 0 to 20 mA / Ni1000 / Pt1000 / contact / digital input 24 V DC
The same types of extension inputs/outputs are produced for the DMM-xx series of modules with MODBUS RTU protocol.
| Communication line | RS485 |
| Galvanic isolation of the line | Yes |
| Communication speed | 9,600 Bd až 57,600 Bd |
| Number of modules in the RS485 network | Max. 63 |
| Number of modules on the RS485 segment | Max. 31 |
| Power supply | 24 V ss. ±20 % |
| Consumption | Depending on the type 100 mA to 150 mA |
| Signal connection | Cage clamps WAGO |
| Protection | IP20 |
| Operating temperature | 0 °C to 50 °C |
| Extended temperature range | -40 °C to 50 °C (modules DM-xx/I) |
| Assembly | DIN rail 35 mm |
| Dimensions (š × v × h) | (105 × 90 × 74) mm |



