12.4
Serial I/O COMMREQ Commands
The following COMMREQs are used to implement Serial I/O:
•
Local COMMREQs - do not receive or transmit data through the serial port.
−
Initialize Port (4300)
−
Set Up Input Buffer (4301)
−
Flush Input Buffer (4302)
−
Read Port Status (4303)
−
Write Port Control (4304)
−
Cancel Operation (4399)
•
Remote COMMREQs - receive and/or transmit data through the serial port.
−
Autodial (4400)
−
Write bytes (4401)
−
Read bytes (4402)
−
Read String (4403)
12.4.1
Overlapping COMMREQs
Some of the Serial I/O COMMREQs must complete execution before another
COMMREQ can be processed. Others can be left pending while others are executed.
12.4.2
•
Autodial (4400)
•
Initialize Port (4300)
•
Set Up Input Buffer (4301)
•
Flush Input Buffer (4302)
•
Read Port Status (4303)
•
Write Port Control (4304)
•
Cancel Operation (4399)
•
Serial Port Setup (FFF0)
236
GFK-1503E
VersaMax PLC User Manual
For public disclosure
Содержание VersaMax PLC
Страница 1: ...GE Intelligent Platforms GFK 1503E VersaMax PLC User Manual September 2015 For public disclosure ...
Страница 16: ...Notes 16 GFK 1503E VersaMax PLC User Manual For public disclosure ...
Страница 38: ...Notes 38 GFK 1503E VersaMax PLC User Manual For public disclosure ...
Страница 50: ...Notes 50 GFK 1503E VersaMax PLC User Manual For public disclosure ...
Страница 92: ...Notes 92 GFK 1503E VersaMax PLC User Manual For public disclosure ...
Страница 112: ...Notes 112 GFK 1503E VersaMax PLC User Manual For public disclosure ...
Страница 224: ...Notes 224 GFK 1503E VersaMax PLC User Manual For public disclosure ...
Страница 292: ...Notes 292 GFK 1503E VersaMax PLC User Manual For public disclosure ...
Страница 316: ...Notes 316 GFK 1503E VersaMax PLC User Manual For public disclosure ...
Страница 317: ......
Страница 318: ...GE Intelligent Platforms 1 800 433 2682 1 434 978 5100 www ge ip com GFK 1503E For public disclosure ...