Mitsubishi Electric M800VW Series Programming Manual page 928

M800V/M80V Series PLC Programming Manual (2/2)
16 External PLC link
16.1 CC-Link
 Outline drawing (M800VW Series)
Master station (NC unit)
CC - Link
Expansion card
FCU8-EX561
Partner manufacturer
product
Remote I/O station
Abbreviations and terms related to CC-Link are as follows.
Abbreviations and terms
Master station
Local station
Remote I/O station
Remote device station
Remote station
Standby master station
Intelligent device station
Slave station
SB
SW
RX
RY
RWw
RWr
Master station
or
PLC
CPU
CC - Link
Local station
(NC unit)
Station that controls the remote and local stations.
One master station is required for each system.
Station having a CPU and the ability to communicate with the master and other local stations.
Remote station that handles bit information only.
Remote station that handles bit information and word information data.
Generic term for remote I/O station and remote device station.
Controlled by the master station.
Station to backup the data link control instead of the master station when an error occurs to the
master station.
Station that can perform transient transmission. (Including local stations)
Generic term for remote I/O station, remote device station, local station, intelligent device station
and standby master station.
Link special relay (for CC-Link)
Bit unit information that indicates the module operating status and data link status of the master sta-
tion/local station. Represented as SB for the sake of convenience.
Link special register (for CC-Link)
16-bit unit information that indicates the module operating status and data link status of the master
station/local station. Represented as SW for the sake of convenience.
Remote input (for CC-Link)
Information entered in bit units from the remote station to the master station. Represented as RX
for the sake of convenience.
Remote output (for CC-Link)
Information output in bit units from the remote station to the master station. Represented as RY for
the sake of convenience.
Remote register (Write area for CC-Link)
Information output in 16-bit units from the master station to the device station. Represented as RWw
for the sake of convenience.
Remote register (Read area for CC-Link)
Information entered in 16-bit units from the master station to the remote device station. Represent-
ed as RWr for the sake of convenience.
907
Remote I/O station
Remote device station
Local station
or
PLC
CPU
Description
IB-1501668-B