Delta Electronics Communication Module RTU-485 - Manual (Page 5)

Modbus Remote I/O Communication Module RTU-485
DVP-PLC Application Manual 3
1 Introduction
1. To ensure correct installation and operation of RTU-485, please read this chapter carefully before using your
RTU-485
2. RTU-485 is a Modbus remote I/O communication module for Delta’s PLC to remote-control DVP Slim series
DI/DO and AI/AO extension modules.
3. RTU-485 is a standard Modbus slave device and is compatible with pther master devices which comply with
Modbus protocol.
1.1 Features
y
Auto-detecting extension modules
y Maximum extension: 8 special modules; 128 input points and 128 output points
1.2 Specifications
ƒ DeviceNet connection
Transmission method RS-485
Electrical isolation 500 VDC
Interface Removable connector (3Pin)
Transmission cable 2-wire twister shielded cablew8
ƒ Communication
7, E, 1 7, O, 2 8, O, 1
7, O, 1 7, N, 2 8, N, 1 ASCII
7, E, 2 8, E, 1 8, N, 2
Mode
RTU 8, E, 1 8, O, 1 8, N, 1 8, N, 2
Baud rates
1,200bps; 2,400bps; 4,800bps; 9,600bps; 19,200bps; 38,400bps;
57,600bps; 115,200bps
ƒ Electrical specification
Power supply 24 VDC (-15% ~ 20%) (with DC input polarity reverse protection)
ƒ Environment
Noise immunity
ESD (IEC 61131-2, IEC 61000-4-2): 8KV Air Discharge，4KV Contact
Discharge
EFT (IEC 61131-2, IEC 61000-4-4): Power Line: 2KV, Digital I/O: 1KV
Analog & Communication I/O: 1KV
Damped-Oscillatory Wave: Power Line: 1KV, Digital I/O: 1KV
RS (IEC 61131-2, IEC 61000-4-3): 80MHz~1000MHz , 1.4GHz~2.0GHz ,
10V/m
Operation 0ºC ~ 55ºC (temperature); 50 ~ 95% (humidity); pollution degree 2
Storage -25ºC ~ 70ºC (temperature); 5 ~ 95% (humidity)
Vibration/shock
resistance Standard: IEC 61131-2、IEC 68-2-6 (TEST Fc)/IEC 61131-2 & IEC 68-2-27
(TEST Ea)
Certificates IEC 61131-2, UL508