8
1.9
Basic formats
1.9.1 When setting commands are sent
Command transmi
ssion from computer to VG generator (PC → VG)
STX
VG4CMD
Command 1
Command 2
ETX
or
STX
VG4CMD
Command 1 Command 2 Parameters
ETX
Return value from VG generator to computer after command transmission (PC ← VG)
ACK
or
STX
ESTS
Error code
ETX
When data is required, transmission is as shown below only when the commands were
sent and ACK was returned.
(PC → VG)
STX
TRDT
Data
ETB
or
STX
TRDT
Data
ETX
Return value from VG generator to computer after data transmission (PC ← VG)
ACK
or
STX
ESTS
Error code
ETX
Fig. 1-9-1
1.9.2
When the get command is sent
Command transmission from computer to VG generator (PC → VG)
STX
VG4CMD
Command 1
Command 2
ETX
or
STX
VG4CMD
Command 1 Command 2 Parameters
ETX
Return value from VG generator to computer after command transmi
ssion (PC ← VG)
ACK
or
STX
ESTS
Error code
ETX
Reception is as shown below only when ACK is returned.
(PC ← VG)
STX
TRDT
Data
ETB
or
STX
TRDT
Data
ETX
Fig. 1-9-2
Содержание VG-870
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Страница 53: ...Chapter 2 INDIVIDUAL FORMATS FOR VG CONTROL COMMANDS 39 27 28 29 DOTS 30 CROSS 31 CHARA Fig 2 11 2 ...
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