Matrix-orbital VFD2041 User Manual download pdf (Page 24)

4.2 Changing the I

C Slave Address

Syntax

Hexadecimal 0xFE 0x33 [adr]

Decimal 254 51 [adr]

ASCII 254 “3” [adr]

Parameters

Parameter Length Description

adr 1 The new I

C write address (0x00 -

0xFF).

Description This command sets the I

C write address of the module between 0x00

and 0xFF. The I

C write address must be an even number and the read

address is automatically set to one higher. For example if the I

C write

address is set to 0x50, then the read address is 0x51.

NOTE The change in address is immediate.

Remembered Always

Default 0x50

4.3 Changing the Baud Rate

Syntax

Hexadecimal 0xFE 0x39 [speed]

Decimal 254 57 [speed]

ASCII 254 “9” [speed]

Parameters

Parameter Length Description

speed 1 Hex value corresponding to a baud

rate.

Matrix Orbital VFD2041 20

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 52 53

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
Matrix Orbital VFD2041 3 7
Matrix Orbital VFD2041 4 8
Matrix Orbital VFD2041 5 9
1.3 Features 10
1.4 Connecting to a PC 11
1.5 Installing the Software 12
2 Hardware Information 13
Matrix Orbital VFD2041 11 15
2.2 Power/Data Connector 16
2.3 Protocol Select Jumpers 17
Matrix Orbital VFD2041 14 18
2.4 General Purpose Outputs 19
2.5 Manual Override 19
Matrix Orbital VFD2041 16 20
3 Troubleshooting 21
4 Communications 22
C Transaction Example 23
4.1.3 Serial Communication 23
4.2 Changing the I 24
C Slave Address 24
4.3 Changing the Baud Rate 24
CrystalSpeed 25
8×DesiredBaud 25
5.2 Auto Scroll On 27
5.3 Auto Scroll Off 28
5.4 Clear Screen 28
5.6 Set Auto Line Wrap On 29
5.7 Set Auto Line Wrap Off 29
5.8 Set Cursor Position 29
5.9 Go Home 30
5.10 Move Cursor Back 30
5.11 Move Cursor Forward 30
6 Special Characters 31
6.3 Saving Custom Characters 32
6.4 Loading Custom Characters 33
6.6 Initialize Medium Number 34
6.7 Place Medium Numbers 34
6.8 Initialize Large Numbers 35
6.9 Place Large Number 35
7 General Purpose Output 37
7.3 General Purpose Output On 38
7.4 Set Startup GPO state 38
8 Display Functions 39
8.4 Set VFD Brightness 40
9 Data Security 41
9.3 Data Lock 42
10 Miscellaneous 43
10.2 Read Version Number 44
10.3 Read Module Type 44
11 Command Summary 46
11.3 Special Characters 47
11.4 General Purpose Output 48
11.5 Display Functions 48
11.6 Data Security 48
11.7 Miscellaneous 49
11.8 Command By Number 49
12 Appendix 51
12.3 Physical Layout 52
12.4 Deﬁnitions 53
12.6 Revision History 53

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Matrix-orbital VFD2041 User Manual Page 24

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