ES-8463 Rev.10

R3-GM1

Remote I/O R3 Series

MODBUS INTERFACE MODULE

Functions & Features
• Enables other protocol interface modules to communicate with Modbus data (gateway).
• Recognized as an analog I/O mixed module by other protocol interface modules.
• Used as Modbus slave device like R3-NM1.
Typical Applications
• A gateway for CC-Link and Modbus.
 

MODEL: R3-GM1S[1]

ORDERING INFORMATION

• Code number: R3-GM1S[1]
Specify a code from below for [1].
  (e.g. R3-GM1S/CE/Q)
• Specify the specification for option code /Q
  (e.g. /C01)

COMMUNICATION MODE

S: Single

[1] OPTIONS (multiple selections)

Standards & Approvals
blank: Without CE
/CE: CE marking
Other Options
blank: none
/Q: Option other than the above (specify the specification)

SPECIFICATIONS OF OPTION: Q

COATING (For the detail, refer to our web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating

CAUTION

• When selecting network modules, note that this unit is not designed to be used with network modules of certain types or versions.
• This unit CANNOT be used with R3-NC2, R3-NEIP1, R3-NFx, and R3-NLx.
• This unit CAN be used with:
   R3-NM3 and R3-NML3 of firmware version V1.00 or higher;
   R3-NC1, R3-NC3, R3-NDx, R3-NE1, R3-NFL1, R3-NM1, 
   R3-NM4, and R3-NP1 of firmware version V2.00 or higher;
   and 
   other models of any firmware versions.

PACKAGE INCLUDES...

• Terminating resistor (110 Ω, 0.25 W)

GENERAL SPECIFICATIONS

Connection
  Modbus: Euro type connector terminal
  (applicable wire size: 0.2 to 2.5 mm2, stripped length 7 mm)
  Internal bus: Via the Installation Base
  (model: R3-BSx)
  Internal Power: Via the Installation Base
  (model: R3-BSx)
  RUN contact output: M3 separable screw terminal
  (torque 0.5 N·m)
Screw terminal: Nickel-plated steel
Isolation: Modbus to internal bus or internal power to RUN contact output
RUN indicator: Bi-color (green/red) LED
Green turns ON when Modbus communication is normal and fieldbus communication on the R3 Network module side is also normal; or
Red turns ON when receiving data.
Indication selectable with DIP SW3-4.
ERR indicator: Bi-color (green/red) LED
Green turns ON/blinks in communication errors (OFF with wire breakdown; Green blinks with setting errors); or
Red turns ON when transmitting data.
Indication selectable with DIP SW3-4.
Module allocation: Set with the side DIP switch.
■ RUN CONTACT OUTPUT
RUN contact: Turns on while the green RUN LED is ON (only when Modbus communication and the field bus built-in the interface module are in normal).
Rated load: 250 V AC @ 0.5 A (cos ø = 1)
30 V DC @ 0.5 A (resistive load)
(Less than 50 V AC to conform with EU Directive)
Maximum switching voltage: 250 V AC or 30 V DC
Maximum switching power: 250 VA or 150 W
Minimum load: 1 V DC @ 1 mA
Mechanical life: 2 × 107 cycles (300 cycles/min.)
When driving an inductive load, external contact protection and noise quenching recommended.

MODBUS COMMUNICATION

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 (front)
  Data mode: RTU (Binary) or ASCII
  Parity: None, even or odd
  Baud rate: 4800, 9600, 19.2 k, 38.4 k (bps)
Node address: Rotary switch; 01 – F7

INSTALLATION

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

Data allocation: 16 × n (Module allocation: 1 to 8)
Current consumption: 100 mA
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute
(Modbus to internal bus or internal power to RUN contact output)
2000 V AC @ 1 minute (power input to FG; isolated on the power supply module)

STANDARDS & APPROVALS

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

EXTERNAL VIEW

COMMUNICATION CABLE CONNECTIONS

MODBUS FUNCTION CODES & SUPPORTED CODES

MODBUS I/O ASSIGNMENT

TRANSMISSION DATA DESCRIPTIONS

Use the DIP SW located at the side of the module to specify module allocation.
1 module is equivalent to 1 I/O module with 16 words analog input and 16 words analog output. Max. 8 modules (128 words input, 128 words output) transmission is available. R3-GM1 seems as if max. 8 I/O modules are mounted to 8 slots via Modbus.
The input of the module is processed as follows.
  Modbus Communication --> R3-GM1 Module --> R3 Base --> R3 Communication Module
In responding to the input, the output (Holding Register) command becomes valid via Modbus communication, and the input (Input Register) command is valid in the output.
Note: Do not mount any modules in the slots which are occupied by virtual modules. If a real I/O module is mounted in the slot, an internal bus error occurs. Max. 16 real I/O modules and virtual modules are available. The interface module can not read the data for more than 16 modules.

I/O DATA DESCRIPTIONS

■ MODULE STATUS, DATA ERROR STATUS
■ ANALOG DATA

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

SYSTEM CONFIGURATION EXAMPLES

In the following system configuration, Modbus data is converted to CC-Link data via this unit which is used as a gateway.