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6
Prior to start of operation, follow the procedure below. As for detail of procedure, see the 485PC-IF manual.
Determine system configuration
(1)
Setting of transfer specification
(D8120)
•
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)
(2)
Setting of station number (D8120)
(3)
Setting of time-out check time
(D8129)
Creation of program at computer side
External wiring
Connection of terminal end resistance
Loop test
Creation of sequence program for data
transmission and reception
Operation
START UP PROCEDURE
······
See section 1.2.
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
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.
Create communication program on the computer by using BASIC or
······
the similar programming tools.
See section 2.1 and 2.2.
······
See section 2.3.
······
Execute loop test, and confirm data exchange.
······
For details see the 485PC-IF manual.
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.
series PC, be sure to turn on the special auxiliary
0N
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