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


Document File
DMM-AI12 Drawing symbol
Data sheet dmm-ai12_d_en_101.pdf
ePLAN macro
DMM-AO8I Drawing symbol
Data sheet dmm-ao8i_d_en_101.pdf
ePLAN macro
DMM-AO8U Drawing symbol
Data sheet dmm-ao8u_d_en_101.pdf
ePLAN macro
DMM-DI24 Drawing symbol
Data sheet dmm-di24_d_en_101.pdf
ePLAN macro
DMM-DO18 Drawing symbol
Data sheet dmm-do18_d_en_101.pdf
ePLAN macro
DMM-PDO6NI6 Drawing symbol
Data sheet dmm-pdo6ni6_d_en_102.pdf
ePLAN macro
DMM-RDO12 Drawing symbol
Data sheet dmm-rdo12_d_en_101.pdf
ePLAN macro
DMM-UI8AO8U Data sheet dmm-ui8ao8u_d_en_100.pdf
Operation manual dmm-ui8ao8u_g_en_102.pdf
Drawing symbol
ePLAN macro
DMM-UI8DO8 Drawing symbol
Data sheet dmm-ui8do8_d_en_100.pdf
Operation manual dmm-ui8do8_g_en_102.pdf
ePLAN macro
DMM-UI8RDO8 Drawing symbol
Data sheet dmm-ui8rdo8_d_en_100.pdf
Operation manual dmm-ui8rdo8_g_en_102.pdf
ePLAN macro

Please provide your email address

To download this file, you must provide your email address

Please enter valid email address.