DMM-xx modules of remote I/O with MODBUS protocol
The MODBUS protocol, along with AMiT’s control systems, is suitable for use in situations requiring communication with the equipment of other companies. If an AMiT-produced control system needs to be extended with more inputs and outputs, we recommend using DM-xx input/output modules communicating via the ARION network.
Modules of the DMM-xx series were completely replaced by modules of the AMRIO series.
An overview of the I/O extension modules with MODBUS protocol
| DMM-DI24 | 24× digital input 24 V DC / AC, galvanic isolation |
| DMM-DO18 | 18× digital output 24 V DC, 300 mA, galvanic isolation |
| DMM-RDO12 | 12× switching relay 250 V / 6A |
| DMM-AI12 | 12× analogue input 0 V to 5 V, 0 V to 10 V, 0 mA to 20 mA, Ni1000 / Pt1000, 12 bits |
| DMM-AO8U | 8× analogue output 0 V to 10 V, resolution 12 bits |
| DMM-AO8I | 8× analogue output 0 mA to 20 mA, resolution 12 bits |
| DMM-PDO6NI6 | 6× Ni1000, 6× digital input 24 V DC, 1 A, galvanic isolation |
| DMM-UI8DO8 | 8× universal input*), 8× digital output 24 V DC, 300 mA, galvanic separation |
| DMM-UI8RDO8 | 8× universal input*), 8× switching relay 230 V AC / 24 V DC / 2 A |
| DMM-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
| Communication line | RS485 |
| Galvanic isolation of the line | Yes |
| Communication speed | 9600 Bd to 57,600 Bd |
| Number of modules on RS485 line | Max. 63 |
| Number of modules on RS485 segment | Max. 31 |
| Power supply | 24 V DC ±20 % |
| Power consumption | Depending on the type 100 to 150 mA |
| Signal connection | WAGO cage clamp connectors |
| Cover protection rate | IP20 |
| Operating temperature | 0 °C to 50 °C |
| Extended range of operating temeprature | -40 °C to 50 °C (DMM-xx/I modules) |
| Mounting | 35 mm DIN rail |
| Dimensions (w × h × d) | (105 × 90 × 74) mm |
