3 CC-Link IE Field Basic Communication (Slave)
4-20
KW2D Series Smart RFID Reader User’s Manual
3.2 CC-Link IE Field Basic (Slave Station)
The KW2D Series Smart RFID Reader acts as a slave station of CC-Link IE Field Basic and performs the cyclic
transmission with the master station.
●
Cyclic Transmission Overview
CC link IE field basic devices read and write data periodically. In order to read/write data, specify Rx/RWr/RY/RWw
associated to the target data.
Cyclic communication image
●
Memory allocation for cyclic transmission
The host device reads and writes the shared memory of the KW2D Smart RFID Reader via the link devices RX, RWr,
RY, and RWw.
The correspondence between the shared memory for CC-Link IE Field Basic communication and the shared memory of
the KW2D Smart RFID Reader is as follows.
■
Link device RX (0 to 3F)
The host device (master station) can read the value of the input relay of the KW2D Smart RFID Reader via RX.
■
Link device RWr (0 to 1F)
The host device (master station) can read the value of the input register of the KW2D Smart RFID Reader via RWr.
Shared Memory
CC-Link IE Field Basic Slave
Device Name
Address No.
Device Name
Address No.
Input Relay
0001
RX
0
0002
1
…
…
0063
3E
0064
3F
Shared Memory
CC-Link IE Field Basic Slave
Device Name
Address No.
Device Name
Address No.
Input Register
0001
RWr
0
0002
1
…
…
0031
1E
0032
1F
Request
KW2D Series Smart RFID Reader
CC-Link IE Field Basic Slaves
RX
RWr
Connected device
detection
SLMP Request
SLMP Replies
Reply
RY
RWw
CC-Link IE Field Basic Master
Port: 61451
Port: 61450
Connected device
detection
(NodeSearch)