DATA LOGGER MANUAL
Manufacturers of low power instruments
page 78
Figure 1: RS485 Wiring
RS485 is often used with MODBUS/RTU-sensors, and is less susceptible for Electrical interference than
RS232.
Your data logger has one RS485 port which is capable of driving multiple sensors (maximum amount of
sensors depends on specs from the manufacturer of the sensor, a practical figure is 10. The maximum
amount of slaves, defined by EIA/RS485 is 32). For the exact number of sensors you can connect to your
ML-2013 see chapter
Firmware Driver limitations
We recommend using twisted pair cable to connect to the sensors.