User's Manual
2. DEVICE RANGE THAT CAN BE SET
2 - 3
1
PREPARATORY 
PROCEDURES FOR 
MONITORING
2
DEVICE RANGE 
THAT CAN BE SET
3
ACCESS RANGE 
FOR MONITORING
4
HOW TO MONITOR 
REDUNTANT 
SYSTEM
5
BUS CONNECTION
6
DIRECT 
CONNECTION TO 
CPU
7
COMPUTER LINK 
CONNECTION
8
ETHERNET 
CONNECTION
 Setting item
(For MELSEC-QnU/DC, Q17nD/M/NC/DR, CRnD-700)
(For MELSEC-FX)
When selecting buffer memory (G) with the following controllers
MELSEC-QnU/DC, Q17nD/M/NC/DR, CRnD-700
MELSEC-L
MELSEC-QnA/Q/QS, MELDAS C6 *
MELSEC-Q(MULTI)/Q MOTION
Item Description
Device
Set the device name, device number, and bit number.
The bit number can be set only by specifying the bit of word device.
When setting buffer memory (BM) and (G), set the buffer memory address in the space for the device number.
Reading the device comment data created by GX Developer and confirming the device 
comment/device name are available during device setting.
For details on the procedure to refer to the device comment, refer to the following.
GT Designer3 Version  Screen Design Manual
Block
Set the block number of the extended file register.
This item can be set only when the extended file register (ER) is selected.
Intelligent 
function 
module
Unit top I/O
Set when the buffer memory (BM) is selected.
Set the head I/O number of the buffer memory for the intelligent function module.
Set the first 2 digits of the 3-digit head I/O number.
Unit No.
Set when the buffer memory (G) is selected.
Set the head I/O number of the buffer memory for the intelligent function module.
Set the first 2 digits of the 3-digit head I/O number.
MELSEC-
FX buffer 
memory
Mask type
Set for using the buffer memory of MELSEC-FX series.
Set the mask type for monitoring or writing only specified bits of the buffer memory.
(4) Setting of the mask type (MELSEC-FX)
Unit No.
Set for using the buffer memory of MELSEC-FX series.
Set the module No. of the special function unit or special function block to monitor or write.
(5) Setting of the module No. (MELSEC-FX)
Information Displays the device type and its setting range selected in [Device].
Network
Set the station number of the controller to be monitored.
CPU No.
Set the CPU No. of the controller.
(1) Setting of the CPU No.
Host Select this item for monitoring the host controller.
Other
Select this for monitoring other controllers.
After selecting the item, set the station number and network number of the controller to be 
monitored.
NW No.: Set the network No.
Station No.: Set the station No.










