Chapter 5
USING STANDARD RS-485
This chapter describes the use of standard RS-485 communications ports and provides an overview of
FRENIC-VG Loader.
Contents
5.1
Standard RS-485 Communications Ports ............................................................................................ 5-1
5.1.1
RS-485 common specifications................................................................................................... 5-2
5.1.2
Terminal specifications for RS-485 communications.................................................................. 5-3
5.1.3
Connection method ..................................................................................................................... 5-4
5.1.4
Communications support devices................................................................................................ 5-6
5.1.4.1
Converters .................................................................................................................................. 5-6
5.1.4.2
Cables......................................................................................................................................... 5-7
5.1.5
Link functions ............................................................................................................................. 5-7
5.1.5.1
Link command permission selection.......................................................................................... 5-7
5.1.5.2
Link edit permission selection.................................................................................................... 5-8
5.1.5.3
S range option priority ............................................................................................................... 5-8
5.1.6
Referencing and changing data ................................................................................................... 5-9
5.1.6.1
Write restrictions for function codes .......................................................................................... 5-9
5.1.6.2
Negative response and error response ...................................................................................... 5-10
5.1.6.3
No response.............................................................................................................................. 5-10
5.1.7
RS-485 function codes .............................................................................................................. 5-11
5.1.7.1
Response interval time (H39)................................................................................................... 5-11
5.1.7.2
Disconnection detection time (H38)......................................................................................... 5-12
5.1.7.3
Character timeouts ................................................................................................................... 5-12
5.1.7.4
Timeouts on the master side..................................................................................................... 5-12
5.1.8
Host side procedures ................................................................................................................. 5-13
5.1.8.1
Read procedure ........................................................................................................................ 5-13
5.1.8.2
Write procedure........................................................................................................................ 5-14
5.1.9
RAS........................................................................................................................................... 5-15
5.1.9.1
Communication errors.............................................................................................................. 5-15
5.1.10
Communication error measures................................................................................................. 5-18
5.2
Fuji General-purpose Communications............................................................................................. 5-19
5.2.1
Message format ......................................................................................................................... 5-19
5.2.2
Transmission frame ................................................................................................................... 5-19
5.2.3
Standard frame .......................................................................................................................... 5-20
5.2.4
Option frame ............................................................................................................................. 5-23
5.2.5
Negative response frame ........................................................................................................... 5-27
5.2.6
Field descriptions ...................................................................................................................... 5-28
FRENIC-
VG
5
Содержание FRENIC-VG Series
Страница 1: ...For the STACK type User s Manual User s Manual Option Edition 24A7 E 0045 3 ...
Страница 2: ......
Страница 3: ...High Performance Vector Control Inverter User s Manual Option Edition ...
Страница 155: ...6 5 SX Bus Interface Card 6 79 Chap 6 CONTROL OPTIONS Figure 6 5 5 ...
Страница 156: ...6 80 Basic Connection Diagram Figure 6 5 6 ...
Страница 203: ...6 6 High Speed Serial Communication Capable Terminal Block 6 127 Chap 6 CONTROL OPTIONS Figure 6 6 3 ...
Страница 234: ...6 158 6 7 3 External dimension drawing 17 Unit mm Figure 6 7 5 Option PCB Outline Drawing Tightening torque 0 4 N m ...
Страница 344: ......
Страница 346: ...For the STACK type User s Manual User s Manual Option Edition 24A7 E 0045 3 ...