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Prior to start of operation, follow the procedure below.  As for detail of procedure, see the 485PC-IF manual.

Determine system configuration

Setting of transfer specification
(D8120)

Setting of station number (D8120)
Setting of time-out check time
(D8129)

(1)

(2)
(3)

Specification of data length
Specification of parity
Specification of stop bit
Specification of transfer speed
(baud rate)
Specification of sum check
S p e c i f i c a t i o n   o f   t r a n s f e r
procedure (exclusive protocol)

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Creation of program at computer side

External wiring

Connection of terminal end resistance

Loop test

Operation

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See section 1.2.

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For each item of the communication format e. g., station number, time-

out check time, please see the 485PC-IF manual.

When using the FX

0N

 series PC, be sure to turn on the special auxiliary

relay M8120 because special data registers D8120, D8121, and D8129

are reserved.

When the special auxiliary relay M8120 is in an ON state, it must be

noted that the backed up data registers D254, D255 become general

data registers.

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Create communication program on the computer by using BASIC or
the similar programming tools.

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See section 2.1 and 2.2.

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See section 2.3.

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Execute loop test, and confirm data exchange.
For details see the 485PC-IF manual.

Creation of sequence program for data
transmission and reception

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When using on-demand function or global function, the sequence
program for transmission and reception is required at the PC side.
For details see the 485PC-IF manual.