User`s manual

10-1
Data link DL1 (master station) function
10
10-1 Data link DL1 (master station) function
When the general purpose communication section in the JW-32CUM1 is used for data link DL1
(master station), it can communicate with slave stations of JW and W series PLC.
Chapter 10: Data link DL1 (Master Station) Function
PG/COMM1
PG/COMM2
L1
L2
SHLD
FG
DN - MCM - MCU
FLT
CM1
CM2
SCAN
OFF
ON
LT
PULL
JW30H
JW-21CM (slave station)
JW30H
JW70H
JW-10CM
(slave station)
Max. of 15
slave stations
JW-32CUM1
(master station)
Shielded-twist pair cable Total length max. 1 km 153.6 kbits/s
Item Specifications
Model name of slave stations
JW-21CM (JW20H/JW30H)
JW-10CM (JW50H/70H/100H, JW50/70/100, W70H/100H)
ZW-10CM (JW50/70/100, W70H/100H),
Z-331J/332J (J-board), ZW-501DL1 (W51), ZW-160DL1 (W16)
Number of connectable slave
stations
Max. 15 stations
Number of link bytes Total 64 bytes (512 points)
Number of link bytes per
station
Divide evenly by the number of slave stations (1 station: 32
bytes, 2 to 3 stations: 16 bytes, 4 to 7 stations: 8 bytes, 8 to 15
stations: 4 bytes)
- This link offers communication between a master and a slave station, or between 2 slave stations.
(N:M method)
- You can transfer ON and OFF signals and send or receive data between 16 programmable
controllers (15 slave stations max.) without using input/output modules.
- The number of link byte is 64 bytes in total.
- Setting a master station and a slave station at a far distance is available. A one signal cable
communicates data with serial transfer system. A special program is not necessary for PC as the
data link module controls (general purpose communication section when using a JW-32CUM1) the
communication.
- Total length of the signal cable is up to 1 km.
Remarks
- The data memory area for data link DL1 in the JW-32CUM1 (as a master station) is fixed (module
No. switch = 0). - See pages 10-4 and 10-6.
Therefore, set the module No. switch on the option modules (such as JW-22CM) that are installed
on the JW-34KBM (JW-32CUM1) to a number other than "0."
- You cannot specify a specific station to receive data. All of the stations will receive the same data
from any other station.