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■Word device
Depending on what was selected in "Communication Pattern", the contents to be set for "Source" and "Target" differ.
For the device and address value of the RJ71EN71 or CPU module, see Simple CPU communication function. ( MELSEC
iQ-R Ethernet User's Manual (Application))
Communication
Transfer source
Pattern
Type
Read
NZ2FT-MT register
type
Write
RJ71EN71 or CPU
module device
The following table lists the combinations of the register type and the MODBUS standard function supported by the NZ2FT-
MT. ( Page 309 Bit address, Page 307 MODBUS standard function)
Simple CPU communication
Communication pattern
Read
Write
For the number of points that can be read/written, refer to the details of the MODBUS standard function below.
MELSEC iQ-R MODBUS/TCP Reference Manual
Precautions
Do not set the same address for "Bit Device" and "Word Device". When the same address is set, the operation cannot be
guaranteed. Also, the bit device 0000 and the register address 0000.0 refer to the same bit. Therefore, if 0000 to 001F is set
for the bit device and 0000 to 0001 is set for the register device, the same address is set.
Start
End
Register address of the NZ2FT-MT register
RJ71EN71 or CPU module device address
Register type
Input Register
Holding Register
Holding Register
Transfer destination
Type
Start
RJ71EN71 or CPU
RJ71EN71 or CPU module device address
module device
NZ2FT-MT register
Register address of the NZ2FT-MT register
type
MODBUS standard function
Function code
04
03
16
End
Function name
Read input register areas
Read holding register areas
Write multiple register areas
11 NZ2FT-MT
301
11.6 Parameter Settings
11
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Troubleshooting
