Toshiba AS311 Manual De Usuario
4
ASCII Interface Module (AS311)
Contents
Contents
Safety
Precautions
.................................................................................. 1
About This Manual
.................................................................................. 2
1.
AS311
Overview
.......................................................................... 7
1.1
Introduction
......................................................................................
8
1.2
AS311
functions
...............................................................................
9
1.3
External
features
..............................................................................
10
2.
Specifications
............................................................................ 15
2.1
General
specifications
......................................................................
16
2.2
Functional
specifications
................................................................
16
2.3
Transmission specifications
.............................................................
17
3.
Cable
Connections ..................................................................... 19
3.1
RS-232C
connection
.........................................................................
20
3.2
RS-422
connection
............................................................................
21
4.
Register
Configuration
.............................................................. 23
4.1
I/O allocation and I/O registers
........................................................
24
4.2
AS311 buffer memory ........................................................................
26
4.2.1
Memory map
...............................................................................
26
4.2.2
Buffer memory access
................................................................
27
4.2.3
Parameter area
............................................................................
29
4.2.4
Receiving and transmitting data area
..........................................
36
5.
Operation
Procedure
................................................................. 37
5.1
Transmission message format ..........................................................
38
5.2
Received message read sequence
..................................................
39
5.2.1
Flag control timing
.......................................................................
39
5.2.2
T3 sample program for message receiving
...................................
40
5.3
Write sequence for message transmitting
.......................................
43
5.3.1
Flag control timing
.......................................................................
43
5.3.2
T3 sample program for message transmitting ................................
44
5.4
Checking the AS311 operation status
..............................................
47
5.5
Resetting the AS311 by software ......................................................
48
5.6
Setting the trailing code ....................................................................
49
5.7
Setting the time-out check time
........................................................
50