·Some details are not shown. Please refer to specification sheets for all information.

R8-NM1

Remote I/O R8 Series

POWER/NETWORK MODULE
(Modbus use)

Functions & Features
• Free combination of analog and discrete I/O
• Space-saving
Typical Applications
• Remote I/O for DCS and PLC
 

MODEL: R8–NM1–R[1]

ORDERING INFORMATION
• Code number: R8-NM1-R[1]
Specify a code from below for [1].
  (e.g. R8-NM1-R/Q)
• Specify the specification for option code /Q
  (e.g. /C01)

MODULE TYPE
NM1: Modbus

POWER INPUT
DC power
R: 24 V DC
(Operational voltage range: ±10 %; ripple 10 %p-p max.)

[1] OPTIONS
blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q
COATING (For the detail, refer to M-System's web site.)
/C01: Silicone coating
/C02: Polyurethane coating

RELATED PRODUCTS
• PC Configurator cable (model: COP-US)
• PC configurator software (model: R8CFG)
Downloadable at M-System’s web site.

PACKAGE INCLUDES...
• Protective cover

GENERAL SPECIFICATIONS
Connection
Power input or excitation supply: Tension clamp (Front Twin connection)
  Applicable wire size: 0.2 - 2.5 mm2
  Stripped length: 10 mm
Modbus: Tension clamp (Front Twin connection)
  Applicable wire size: 0.2 - 1.5 mm2
  Stripped length: 10 mm
Internal bus or internal power or excitation supply: Via connector
Max. number of I/O modules: 16
(Max. consumption current of I/O modules: 1.6 A)
Isolation: Modbus to internal bus or internal power or power input to exc. supply to FE1
Status indicators: Power, Run, Error, SD, RD
Data allocation: Mode 1, 2

MODBUS COMMUNICATION
Communication: Half-duplex, asynchronous, no procedure
Standard: Conforms to TIA/EIA-485-A
Transmission distance: 500 meters max.
Transmission media: Shielded twisted-pair cable
(CPEV-S 0.9 dia.)
Transmission setting: DIP switch, rotary switch. 
  Data format: RTU (Binary) or ASCII
  Parity: none, even or odd
  Baud rate: 4800, 9600, 19.2 k, 38.4 k (bps)
Node address: With rotary switch
Terminating resistor: Built-in (DIP Switch, default: disable)

INSTALLATION
Power consumption
DC: Approx. 12 W 24 V DC (@ internal power max. current 1.6 A)
Internal power supply (power supply for I/O module):
• DC power supply: 5 V DC
• Current capacity: 1.6 A
Excitation supply output (excitation for I/O module)
DC: 24 V DC ±10 %
Operational current: 10 A
 (From power supply (exitation supply) connector, via connector for internal bus, supplied to each I/O module. Power output current consumption must be under operational current.)
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: DIN rail
Weight: 160 g (0.35 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 exc. supply to FE1)

STANDARDS & APPROVALS
EU conformity:
EMC Directive 
  EMI EN 61000-6-4
  EMS EN 61000-6-2
RoHS Directive

EXTERNAL VIEW

CONNECTION DIAGRAMS

MODBUS FUNCTION CODES & SUPPORTED CODES

MODBUS I/O ASSIGNMENT
The DIP SW located at the front of the module switches the unit’s data allocation mode.
In the Data Allocation Mode 1, one (1) word is assigned per module. The second channel of analog I/O modules cannot be used. When I/O module of 32-bit data is used, set the Data Allocation Mode to 2.
In the Data Allocation Mode 2, two (2) words are assigned per module regardless of whether the second word area is required or not.
For discrete I/O, 16-channel area is automatically assigned to each module. With a 4-channel module, the bits assigned to ch. 5 through 16 remain “0.”
A 4-point analog I/O module takes two addresses per module. For example with the model R8-SV4N located at the module address 5, the inputs 1 and 2 are assigned to the address 5, and the inputs 3 and 4 are to the address 6. Do not assign another module to the address 6. All 4 inputs (input 1 through 4) can be used with Data Allocation Mode 2, while only the inputs 1 and 3 can be used with Data Allocation Mode 1. R8-NM1 Version 1.04 or later can deal with I/O mixed modules. The version of R8-NM1 is confirmed with configurator software (model: R8CFG).
Note: DO NOT access addresses other than mentioned below. Such access may cause problems such as inadequate operation.

I/O DATA DESCRIPTIONS

EXTERNAL DIMENSIONS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
Note: In order to improve EMC performance, bond the FE1 terminal to ground.
Caution: FE1 terminal is NOT a protective conductor terminal. 

M-System Co., Ltd.