9-3 Expansion of network

The JW-21MN can transmit data between 64 stations at maximum. If more than 64 stations are required for data link, you can add communication stations with the procedure below.

[1] Multiple installation of the JW-21MN

Mounting more than one JW-21MN on the basic rack panel of the JW20/JW20H/JW30H can increase the number of stations.

[In the case of mounting 4 sets of JW-21MN]

MasterMasterMaster Master

Slave

０１

０２

０３

０４

０５

７３

７４

７５

７６

７７

 

 

 

 

 

63 stations max.

 

 

 

 

Slave

 

 

 

 

 

 

 

 

 

０１

０２

０３

０４

０５

７３

７４

７５

７６

７７

63 stations max.

Slave

０１０２０３０４０５７２７３７４７５７６７７

63 stations max.

9

Slave

０１０２０３０４０５７２７３７４７５７６７７

63 stations max.

: Master station

: Slave station

Slave station number 01 to 77: octal

Remarks

-When installing multiple number of modules on a single PC, make them allocated so that relay link area, register link area, and flag area may not overlap with each other.

-When installing multiple number of modules on a single PC, pay attention to the total communica- tion data volume and the number of bytes available for communication area.

-Though more than one JW-21MN can be mounted on single basic rack panel, they cannot directly communicate with other stations beyond one network.

9-6