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1
OVERVIEW
1.1 Features
1 - 2
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
PREPARATORY
PROCEDURES BEFORE
OPERATION
6
LINK DATA SEND/
RECEIVE PROCESSING
AND PROCESSING TIME
7
PROGRAMMING
8
TROUBLESHOOTING
1.1 Features
This section describes features of a local module.
(1) Cyclic transmission function
The data can be communicated between master and local stations cyclically.
(a) 1: n communication (B/W communication)
Data is communicated between the master station and a local station and
between local stations.
In this communication, ON/OFF information and 16-bit data are communicated.
1) The ON/OFF information is communicated by link relays (B).
2) The 16-bit data is communicated by link registers (W).
(b) 1:1 communication (X/Y communication)
The one-to-one data communication is performed between the master station and
a local station.
The ON/OFF information can be communicated using the input (X)/output (Y).
Figure 1.2 B/W communication data flow
Figure 1.3 X/Y communication data flow
Data memory
storage area
Q series local station
Local module
CPU module
Master station
B
W
B
W
B
W
Link data
storage area
Link data
storage area
Buffer memoryBuffer memory
Data memory
storage area
B
W
Data memory
storage area
Local station
B
W
B
W
Link data
storage area
Link scan
Link refresh
Data flow (Send/receive processing)
X
Y
X
Y
Y
X
Y
X
Data memory
storage area
Q series local station
Local module
CPU module
Master station
Link data
storage area
Link data
storage area
Buffer memoryBuffer memory
Data memory
storage area
Link scan
Link refresh
Data flow (Send/receive processing)