Matrix-orbital VK204-25 Legacy Manual do Utilizador descarregar pdf (Página 11)

1 Power Connector 5 Serial Header

2 Keypad Header 6 GPOs

3 Manual Override 7 Optional Dallas 1-Wire Bridge

4 USB Header 8 Protocol Select Jumpers

Figure 9: LK204-25-USB

2.1 Power Connector

The LK204-25-USB provides a Power Connector to allow the device to be powered externally. In order

to power the device externally, you must remove one of the USB protocol select jumpers. The jumper to

remove is the leftmost USB jumper as seen if ﬁgure 17.

Matrix Orbital VK204-25-USB 7

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 56 57

VK204-25-USB 1
Technical Manual 1
Revision: 1.1 1
Contents 2
1 Getting Started 5
Figure 2: 3ft mini-B USB 6
Figure 3: Aluminum Mountings 6
Matrix Orbital VK204-25-USB 2 6
Figure 4: Keypad Mountings 7
Figure 5: Mounting Kits 7
Matrix Orbital VK204-25-USB 3 7
1.3 Features 8
1.4 Connecting to a PC 9
1.5 Installing the Software 9
2 Hardware Information 10
2.1 Power Connector 11
Pin 4 +5V 12
2.3 Manual Override 13
2.4 USB Header 13
2.6 General Purpose Outputs 14
2.5 Serial Header 14
GND Ground (0VDC) 15
VCC +5VDC at 20 mA 15
2.7 Dallas 1-Wire Bridge 16
2.8 Protocol Select Jumpers 16
3 Troubleshooting 17
4 Communications 18
C Transaction Example 19
4.1.3 Serial Communication 19
4.2 Changing the I 20
C Slave Address 20
4.3 Changing the Baud Rate 20
CrystalSpeed 21
8×DesiredBaud 21
5.2 Auto Scroll On 23
5.3 Auto Scroll Off 24
5.4 Clear Screen 24
5.6 Set Auto Line Wrap On 25
5.7 Set Auto Line Wrap Off 25
5.8 Set Cursor Position 25
5.9 Go Home 26
5.10 Move Cursor Back 26
5.11 Move Cursor Forward 26
6 Special Characters 27
6.3 Saving Custom Characters 28
6.4 Loading Custom Characters 29
6.6 Initialize Medium Number 30
6.7 Place Medium Numbers 30
6.8 Initialize Large Numbers 31
6.9 Place Large Number 31
7 General Purpose Output 33
7.3 General Purpose Output On 34
7.4 Set Startup GPO state 34
8 Dallas 1-Wire 35
8.3 Dallas 1-Wire Transaction 36
9 Keypad 37
9.4 Poll Key Press 38
9.5 Clear Key Buffer 39
9.6 Set Debounce Time 39
9.7 Set Auto Repeat Mode 40
9.8 Auto Repeat Mode Off 40
10 Display Functions 41
10.3 Display Off 42
10.4 Set VFD Brightness 42
11 Data Security 43
11.3 Data Lock 44
11.4 Set and Save Data Lock 45
12 Miscellaneous 46
12.3 Read Module Type 47
13 Command Summary 49
13.3 Special Characters 50
13.4 General Purpose Output 51
13.5 Dallas 1-Wire 51
13.6 Keypad 51
13.7 Display Functions 52
13.8 Data Security 52
13.9 Miscellaneous 53
13.10 Command By Number 53
14 Appendix 55
14.3 Physical Layout 56
14.4 Deﬁnitions 56
14.6 Revision History 57

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