Matrix-orbital LK402-25 Legacy Bedienungsanleitung PDF herunterladen (Seite 18)

4.4 Setting a Non-Standard Baud Rate

Syntax

Hexadecimal 0xFE 0xA4 [speed]

Decimal 254 164 [speed]

Parameters

Parameter Length Description

speed 2 Inputed LSB MSB from baud rate

formula (12-2047).

Description This command sets the RS-232 port to a non-standard baud rate. The

command accepts a two byte parameter that goes directly into the

modules baud generator. Use the formula, speed =

CrystalSpeed

8×DesiredBaud

− 1 to

calculate the [speed] for any baud rate setting. The speed can be

anywhere from 12 to 2047 which corresponds to a baud range of 977 to

153,800 baud. Setting the baud rate out of this range could cause the

display to stop working properly and require the Manual Override

jumper to be set.

Remembered Always

Matrix Orbital LK402-25 14

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LK402-25 1
Technical Manual 1
Revision: 1.1 1
Contents 2
1 Getting Started 5
1.3 Features 6
1.4 Connecting to a PC 7
1.5 Installing the Software 8
2 Hardware Information 9
2.2 Power/Data Connector 10
2.3 Protocol Select Jumpers 11
2.4 General Purpose Outputs 11
2.5 Dallas 1-Wire Bridge 12
2.6 Manual Override 12
3 Troubleshooting 14
4 Communications 15
4.2 Changing the I 16
C Slave Address 16
4.3 Changing the Baud Rate 17
CrystalSpeed 18
8×DesiredBaud 18
5.2 Auto Scroll On 20
5.3 Auto Scroll Off 21
5.4 Clear Screen 21
5.6 Set Auto Line Wrap On 22
5.7 Set Auto Line Wrap Off 22
5.8 Set Cursor Position 22
5.9 Go Home 23
5.10 Move Cursor Back 23
5.11 Move Cursor Forward 23
5.12 Underline Cursor On 24
5.13 Underline Cursor Off 24
5.14 Blinking Block Cursor On 24
6 Special Characters 25
6.3 Saving Custom Characters 26
6.4 Loading Custom Characters 27
6.6 Initialize Medium Number 28
6.7 Place Medium Numbers 28
6.8 Initialize Horizontal Bar 29
6.12 Place Vertical Bar 30
7 General Purpose Output 31
8 Dallas 1-Wire 32
8.3 Dallas 1-Wire Transaction 33
9 Keypad 34
C Interface 35
9.1.2 RS232 Interface 35
9.4 Poll Key Press 36
9.5 Clear Key Buffer 36
9.6 Set Debounce Time 37
9.7 Set Auto Repeat Mode 37
9.8 Auto Repeat Mode Off 38
9.9 Assign Keypad Codes 38
10 Display Functions 39
10.3 Display Off 40
10.4 Set Brightness 40
10.5 Set and Save Brightness 40
10.6 Set Contrast 40
10.7 Set and Save Contrast 41
11 Data Security 42
11.3 Data Lock 43
12 Miscellaneous 44
12.2 Read Version Number 45
12.3 Read Module Type 45
13 Command Summary 47
13.3 Special Characters 48
13.4 General Purpose Output 49
13.5 Dallas 1-Wire 49
13.6 Keypad 49
13.7 Display Functions 50
13.8 Data Security 50
13.9 Miscellaneous 51
13.10 Command By Number 51
14 Appendix 53
14.3 Physical Layout 54
14.4 Ordering Information 55
14.5 Deﬁnitions 55
14.7 Revision History 55
Table 72: Revision History 56
Revision Description Author 56
Matrix Orbital LK402-25 52 56

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