Specifications
5 - 3
(2) Large-scale and flexible system configuration
(a) The link device has a larger capacity: 16384 points for the link relay (LB) and
16384 points for the link register (LW). The ink input (LX) and link output (LY)
have 8192 points.
(b) A maximum of 4096 I/O points can be set for each remote I/O station. The link
points between a remote master station and a remote I/O station can be set up
to 1600 bytes.
(c) Either of the following systems can be chosen: the optical loop system
(maximum total extension of 30km (98430ft.)) which has a long
station-to-station and total distance, and is resistant to noises, or the coaxial
bus system (maximum total extension of 500m (1640.5ft.) which can be easily
wired.
(d) Any station to be connected in the future can be specified as a reserved station,
and no need to connect stations in order of the station Nos. facilitates the
system configuration.
In the optical loop system, a loop-back is performed when a station goes down.
The functions above facilitate the network connection.
(e) The parameters can be written to the remote I/O module using GX Developer
in the same way as to the CPU module.
The parameters of the remote I/O module can be used to change the detailed
settings (response time, error output mode) for the I/O module mounted on a
remote I/O station, intelligent function module switch settings and I/O
allocations.
(3) Providing versatile communication services
(a) Reading and writing the data of an intelligent function module that is mounted
to a remote I/O station can be easily performed.
There are four methods available for reading and writing.
1) Use GX Configurator to make the initial settings and automatic refresh
settings in the intelligent function module parameters, and write them into
the remote I/O module in the remote I/O station.
By refreshing the intelligent function module data to the link register W of
the remote I/O module in the auto refresh settings, the remote master
station can read/write refreshed data by cyclic transmission.
QCPU
Remote master station
Remote I/O station
Intelligent function module
LW
GX
Configurator
Intelligent function
module parameter
Initial setting
Automatic refresh setting
Remote
I/O module
Intelligent function
module
Link
register W
Buffer
memory
Refresh
QCPU Master module
Link
register W
Link
register LW
Refresh