MODEL: R3-NM3

R3-NM3 SPECIFICATIONS

ES-8330 Rev.7 Page 4/7

http://www.m-system.co.jp/

MODBUS I/O ASSIGNMENT

ADDRESS

DATA FORMAT

NAME

Coil (0X)

1 – 1024

Digital Output (discrete output)

1025

Main / Sub Switching Command (valid only with SW3-3 set to ON)

Inputs (1X)

1 – 1024

Digital Input (discrete input)

1025 – 1040

1041 – 1056

1057 – 1072

Input Registers (3X)

1 – 256

I

Analog Input

257 – 768

F

Analog Input

Holding Registers (4X)

1 – 256

I

Analog Output

257 – 768

F

Analog Output

2001 – 50000

Error Status

Data Error Status

Module Status

Extension I/O

I: Integer, 0 – 10000 (0 – 100%)

F: Floating (32-bit data cannot be accessed using floating addresses.)

Note: DO NOT access addresses other than mentioned above. Such access may cause problems such as inadequate operation.

• Module Status indicates whether individual I/O modules are mounted or not. The bit corresponding to the mounted slot turns to

“1,” and the unmounted slot to “0.”

• Error Status indicates error status for each module as described below. The bit corresponding to such module turns to “1.”

R3-TSx, R3-RSx, R3-US4: Input burnout

R3-DA16A:

Power input in error or disconnected

R3-YSx:

Output current error (e.g. load unconnected)

R3-PC16A:

External power supply in error or disconnected

• Data Error Status indicates overrange (R3-US4: out of -10% to +110%; the other types: out of -15% to +115%) status for each

module. The bit corresponding to such module turns to “1.”

• Main / Sub Switching Commands given to the network modules result as follows:

• For Extension I/O, the mapping of 3000 words per each I/O module is available as shown in the table below.

The mapping contents depends on each module characteristics; refer to each instruction manual.

SLOT

ADDRESS

1

200 1 – 5000

2

500 1 – 8000

3

800 1 – 11000

4

1100 1 – 14000

14

4400 1 – 47000

15

4700 1 – 50000

:

:

‘MAIN’ MODULE

‘SUB’ MODULE

OUTPUT MODE

1

0

0

1

1

1

0

0

Main bus is used; Red light turns on at RUN LED of the I/O modules.

Sub bus is used; Green light turns on at RUN LED of the I/O modules.

Main bus is used; Amber light turns on at RUN LED of the I/O modules.

Output is invalid; RUN LED of the I/O modules turns off.