User`s manual

4 - 7 4 - 7
MELSEC
4 SPECIFICATION
4.4.1 Multiple PLC system support
By setting the logical station number using the CC-Link utility, any PLC of a multiple
PLC system in which a QJ61BT11 is installed can be accessed by an IBM PC/AT
compatible PC in which a CC-Link board is installed.
<Access example>
Using logical station number “65,” an access can be made from an IBM PC/AT
compatible PC in which a CC-Link board is installed to the PLC No. 4 via a
QJ61BT11 (the control PLC is the PLC No.2).
Local station
(CC-Link board)
• • • •
PLC
No.1
PLC
No.2
PLC
No.3
PLC
No.4
QJ61
BT11
Terminal
register
Master station
Station number: 0
(PLC No. 2 is the control PLC.)
Multiple PLC system
• • • •
[Setting the logical station number]
Set the logical station number in the "Target" window of the CC-Link utility.
For details on the "Target" window, see Section 7.2.6.
POINT
Use a QJ61BT11 of functional version B or later in order to access a multiple PLC
system.
A QJ61BT11 of functional version A cannot be used.