[2]Communication area map

(1)In case that setting data link (the standard function) when the master station and all slave stations are JW-21MN's.

Relay link area (Within a total of 256 bytes)

linkarea

totalof2048bytes)

Register

(Withina

Flag area

Master station 00(8) (Data memory)

0

0

1

n

0

0

1

n

0

24 bytes

 

: Send

 

: Receive

Slave station 01(8) n=02to77 (8)

Slave station n

(Data memory)

(Data memory)

1

n

0

0

1

1

n

n

1

n

0

0

1

1

n

n

1

n

24bytes

24bytes

11

- Set the relay link area, register link area, flag area within the setting range nominated in page 11- 11, 12 and 23. However, be careful not to double any address allocation of these.

- Set a0 to en for parameters of master station and slave station. (See page 11-5, 6 and 22)

Parameter for setting in master station

Top address of relay link area a0, a1 to an

Top address of register link area b0, b1 to bn

Number of sending bytes of relay link area c0, c1 to cn

Number of sending bytes of register link area d0, d1 to dn

Top address of flag area (master station) e0.

Parameter for setting in slave station

Top address of flag area (slave station) e1 to en

-Total number of sending bytes per station both relay link and register link is max. 1024 bytes. c0+d0, c1+d1, cn+dn = 0 to 1024 bytes.

11-7