Industrial Gateway


  • Serial Baud and M-Bus Baud can be configured separately
  • Provides 10 kinds of Baud for default, 6 kinds of Baud for user-defined
  • Supports up to 100 M-Bus slaves
  • Provides transparent communication
  • Watchdog inside
  • Allows updating firmware by the RS-232 port
  • Overcurrent and short-circuit protection on the M-Bus port
  • 3750 Vrms photocouple isolation on the M-Bus port
  • ±4 kV ESD to contact
  • Reverse polarity protection on power


The I-7590 is specially designed for M-Bus slave device. It is a serial bus to M-Bus convertor. First, for serial bus, it offers RS-232, RS-422 and RS-485 three kinds of communication way. Second, the I-7590 has two rotary switches, one for serial port baud and the other for M-Bus port baud. Third, the I-7590 uses transparent transmission between serial bus and M-Bus communication. Through these three designs, it is easy to communicate with any standard M-Bus slave.


The M-Bus (Meter‐Bus) is a bus optimized for the reading of measurement instruments like: energy counters, hot and cold water counters, gas, pressure, sensors and actuators, etc….


 COM Ports
 Ports 1 x RS-232/485/422, Non-isolated
 Baud Rate 300 ~ 115200 bps
 Parity None, Even, Odd, Mark, Space
 Data Bit 5, 6, 7, 8
 Stop Bit 1, 2


 Ports 1
 Baud Rate 300 ~ 2400 bps and user-defined baud rate
 Data Bit 5, 6, 7, 8
 Stop Bit 1, 2
 Parity None, Even, Odd, Space, Mark
 Isolation 3750 Vrms for photo-couple
 Current Protection short-circuit protection


 Consumption 1.8 W @ 24 VDC (with 1 slave device), 11.8 W @ 24 VDC (with 100 slave devices)


 Dimensions (mm) 72 x 120 x 36 (W x H x D)
 Installation DIN-Rail


 Operating Temperature -25 ~ +75 °C (-13 to 167 ℉)
 Storage Temperature -30 ~ +80 °C (-22 to 176 ℉)
 Humidity 10% ~ 90% RH, Non-condensing



I-7590     CR  RS-232 / RS-422 / RS-485 to M-Bus Converter (RoHS) 1