Fuji Electric ALPHA7, Руководство пользователя

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CHAPTER 13 MODBUS RTU COMMUNICATION
Communications Procedures
13-37
13
13.5.5 Communications example
1. Immediate value data operation
A Communications example for conducting positioning operation with immediate value data is
described.

Preparation

Select the positioning operation control mode.
･･･
PA1_01: Control mode selection =7: Positioning operation

Assign [START] to CONT9.
･･･
PA3_09: CONT9 signal assignment =4: [START]

Assign [INP] to OUT6.
･･･
PA3_56: OUT6 signal assignment =2: [INP]
 Communications example

Turn on [S-ON] assigned to CONT1 to arrange the operation state, and perform communications
as shown below.

The example assumes a communications baud rate of 38400 bps.
5 ms 5 ms 5 ms 5 ms 5 ms 5 ms 5 ms 5 ms 5 ms
Query
Response
[START]
[INP]
Speed
OFF
ON
Immediate value data setting 1 Immediate value data setting 2
Immediate value data
operation 1
Immediate value data
operation 2
ON
OFF
①
② ③ ④ ⑤ ⑤ ⑥ ⑦ ⑧ ⑧
(1) Write immediate value data setting 1 as immediate value data.
Setting 1: Designation method = ABS. Immediate value position = 500000 units.
Immediate value speed = 500.00 r/min
Query: 01 10 5100 0006 0C 00000000 0007A120 0000C350 D9EC (21 bytes)
Response: 01 10 5100 0006 50F7 (8 bytes)
(2) Write “1” (ON) to [START] to start positioning operation. (Immediate value data operation 1
based on immediate value data setting 1 starts.)
Query:
01 10 0000 0002 04 00000001 326F (13 bytes)
Response: 01 10 0000 0002 41C8 (8 bytes)
The detail timing at this time is shown below.
Query
Detection of time for 3
characters (38400 bps)
Response
[START]
Speed
1.5 ms
0.5 ms
0.5 ms
5 ms