Matrix-orbital LK204-25 Legacy Manual do Utilizador descarregar pdf (Página 12)

1 DB-9 Connector 5 Power / Data Connector

2 Power Through DB9 Jumper 6 Keypad Interface

3 GPOs 7 Protocol Select Jumpers

4 Manual Override 8 Optional Dallas 1-Wire Bridge

Figure 13: LK204-25

2.1 DB-9 Connector

The LK204-25 provides a DB-9 Connector to readily interface with serial devices which use the EIA232

standard signal levels of ± 12V to ±12V. It is also possible to communicate at TTL levels of 0 to +5V by

setting the Protocol Select Jumpers to TTL. As an added feature it is also possible to apply power through

pin 9 of the DB-9 Connector in order to reduce cable clutter. However, in order to accomplish this you must

set the Power Through DB-9 Jumper.

Matrix Orbital LK204-25 8

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 61 62

LK204-25 1
Technical Manual 1
Revision: 2.1 1
Contents 2
1 Getting Started 5
1.2 Accessories 6
Figure 4: Breadboard Cable 7
Figure 5: Serial Cable 4FT 7
Figure 7: Aluminum Mountings 7
Matrix Orbital LK204-25 3 7
Figure 8: Keypad Mountings 8
Figure 9: Mounting Kits 8
Figure 10: 4X4 Keypad 8
Matrix Orbital LK204-25 4 8
1.3 Features 9
1.4 Connecting to a PC 9
1.5 Installing the Software 10
2 Hardware Information 11
2.1 DB-9 Connector 12
2.2 Power/Data Connector 14
2.3 Protocol Select Jumpers 14
2.4 General Purpose Outputs 15
2.5 Dallas 1-Wire Bridge 16
2.6 Manual Override 16
3 Troubleshooting 18
4 Communications 19
C Transaction Example 20
4.2 Changing the I 21
C Slave Address 21
4.3 Changing the Baud Rate 21
CrystalSpeed 22
8×DesiredBaud 22
5.2 Auto Scroll On 24
5.3 Auto Scroll Off 25
5.4 Clear Screen 25
5.6 Set Auto Line Wrap On 26
5.7 Set Auto Line Wrap Off 26
5.8 Set Cursor Position 26
5.9 Go Home 27
5.10 Move Cursor Back 27
5.11 Move Cursor Forward 27
5.12 Underline Cursor On 28
5.13 Underline Cursor Off 28
5.14 Blinking Block Cursor On 28
6 Special Characters 29
6.3 Saving Custom Characters 30
6.4 Loading Custom Characters 31
6.6 Initialize Medium Number 32
6.7 Place Medium Numbers 32
6.8 Initialize Large Numbers 33
6.9 Place Large Number 33
7 General Purpose Output 35
7.3 General Purpose Output On 36
7.4 Set Startup GPO state 36
8 Dallas 1-Wire 37
8.3 Dallas 1-Wire Transaction 38
9 Keypad 39
C Interface 40
9.1.2 RS232 Interface 40
9.4 Poll Key Press 41
9.5 Clear Key Buffer 41
9.6 Set Debounce Time 42
9.7 Set Auto Repeat Mode 42
9.8 Auto Repeat Mode Off 43
9.9 Assign Keypad Codes 43
10 Display Functions 44
10.3 Display Off 45
10.4 Set Brightness 45
10.5 Set and Save Brightness 45
10.6 Set Contrast 45
10.7 Set and Save Contrast 46
11 Data Security 47
11.3 Data Lock 48
12 Miscellaneous 49
12.2 Read Version Number 50
12.3 Read Module Type 50
13 Command Summary 52
13.3 Special Characters 53
13.4 General Purpose Output 54
13.5 Dallas 1-Wire 54
13.6 Keypad 54
13.7 Display Functions 55
13.8 Data Security 56
13.9 Miscellaneous 56
13.10 Command By Number 56
14 Appendix 58
Matrix Orbital LK204-25 55 59
14.3 Physical Layout 60
14.4 Ordering Information 61
14.5 Deﬁnitions 61
14.7 Revision History 62

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