MODEL: R3-NM1
MODBUS I/O ASSIGNMENT
ADDRESS
1 – 1024
DATA FORMAT NAME
Digital Output (discrete output)
Coil (0X)
1025
Main / Sub Switching Command (valid only with SW3-3 set to ON)
Inputs (1X)
1 – 1024
Digital Input (discrete input)
Module Status
Error Status
1025 – 1040
1041 – 1056
1057 – 1072
1 – 256
Data Error Status
Analog Input
Input Registers (3X)
I
257 – 768
1 – 256
F
I
Analog Input
Holding Registers (4X)
Analog Output
Analog Output
257 – 768
F
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:
R3-YSx:
R3-PC16A:
Power input in error or disconnected
Output current error (e.g. load unconnected)
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:
MAIN’ MODULE
‘SUB’ MODULE
OUTPUT MODE
1
0
1
0
0
1
1
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.
TRANSMISSION DATA DESCRIPTIONS
The DIP SW located at the side of the module species each I/O module’s data allocation (occupied data area).
For example, when the data areas are assigned as shown below:
Module 1
Module 2
Module 3
Module 4
Module 5
Module 6
Module 7
4
4
4
1
1
1
1
Then the I/O data are assigned as in the table below:
ADDRESS POSITION
1 – 4,
ADDRESS
1 – 64
POSITION
Slot 1
Input Registers (3X)
257 – 264
265 – 272
273 – 280
281 – 282
283 – 284
285 – 286
287 – 288
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 7
Coil (0X)
Holding Registers (4X)
Inputs (1X)
5 – 8,
9 – 12,
13,
65 – 128
129 – 192
193 – 208
209 – 224
225 – 240
241 – 256
Slot 2
Slot 3
Slot 4
14,
Slot 5
15,
Slot 6
16,
Slot 7
For Coil (0X) and Inputs (1X), addresses 16 times assigned data
areas (Data Allocation Type) are allotted with the Data Allocation
Type ‘1’ and ‘4.’ With ‘8’ and ‘16,’ 64 (4 × 16) are automatically al-
lotted.
R3-NM1 SPECIFICATIONS
ES-8354 Rev.24 Page 5/8
https://www.m-system.co.jp/
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