MODEL: R3-NM4
MODBUS COMMUNICATION
RS-485
Standard: Conforms to TIA/EIA-485-A
Transmission distance: 500 meters max.
Transmission media: Shielded twisted-pair cable
(CPEV-S 0.9 dia.)
Supported function codes: 01, 02, 03, 04, 05, 06,
08, 11, 12, 15, 16, 17 (total of 12 types)
Transmission setting: DIP switch (front)
Data: RTU (Binary) or ASCII
Parity: None, even or odd
Baud rate: 300, 600, 1200, 2400, 4800, 9600, 14.4 k,
19.2 k, 28.8 k, 38.4 k, 57.6k, 115.2 k (bps)
Node address: Rotary switch; 01 – F7
INSTALLATION
Power consumption
•AC:
Approx. 20 VA at 100 V
Approx. 28 VA at 200 V
Approx. 30 VA at 240 V
•DC: Approx. 12 W
Current consumption (no power supply): 70 mA
Output current (power supply): 280 mA continuous at 20 V
DC; 430 mA for 10 minutes
Operating temperature: -10 to +55°C (14 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Atmosphere: No corrosive gas or heavy dust
Mounting: Installation Base (model: R3-BSx)
Weight: 200 g (0.44 lb)
PERFORMANCE
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute (Modbus to
internal bus or internal power to power input to RUN contact
output to FG)
R3-NM4 SPECIFICATIONS
ES-8331 Rev.6 Page 2/8
http://www.m-system.co.jp/