MODEL: R8-NM1

R8-NM1 SPECIFICATIONS

ES-9722 Rev.5 Page 5/10

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

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.

Coil (0X)

1 – 16

Module address 0

Do 1 – 16

17 – 32

Module address 1

Do 1 – 16

33 – 48

Module address 2

Do 1 – 16

49 – 64

Module address 3

Do 1 – 16

:

:

:

497 – 512

Module address 31

Do 1 – 16

Inputs (1X)

1 – 16

Module address 0

Di 1 – 16

17 – 32

Module address 1

Di 1 – 16

33 – 48

Module address 2

Di 1 – 16

49 – 64

Module address 3

Di 1 – 16

:

:

:

497 – 512

Module address 31

Di 1 – 16

513 – 544

Active module map

545 – 560

Status