Matrix Orbital GLK19264A-7T-1U - Manual (Page 21)

16 Command Summary
6 Commands
6.1 Communication
1.1 Change
Baud Rate Dec
Hex
ASCII 254 57
FE 39
■ 9
Speed
Speed
Speed v8.0
Immediately changes the baud rate. Not available in I2C. Baud rate can be temporarily forced to 19200 by a
manual override.
Speed Byte Valid settings shown below.
Table 13: Accepted Baud Rate Values
Rate 9600 14400 19200 28800 38400 57600 76800 115200
Speed 207 138 103 68 51 34 25 16
1.2 Change I2C
Slave Address Dec
Hex
ASCII 254 51
FE 33
■ 3
Address
Address
Address v8.0
Immediately changes the I2C write address. Only even values are permitted as the next odd address will become
the read address. Default is 80.
Address Byte Even value.
1.3 Transmission
Protocol Select Dec
Hex 254 160
FE A0
■ á
Protocol
Protocol
Protocol v8.0
Selects the protocol used for data transmission from the display. Data transmission to the display is not affected.
Must be set to the protocol in use to receive data correctly.
Protocol Byte 1 for Serial (RS232/RS422/TTL/USB) or 0 for I2C.
1.4 Set Flow
Control Mode Dec
Hex
ASCII 254 63
FE 3F
■ ?
Mode
Mode
Mode v8.0
Toggles flow control between hardware, software and off settings. Software and Hardware control can be further
tuned using the settings above. Default is Hardware, or 2.
Mode Byte Flow control setting as below.
Table 14: Hardware Flow Control Trigger Levels
Bytes 1 4 8 14
Level 0 1 2 3
Table 15: Flow Control Settings
Flow Control None Software Hardware
Mode 0 1 2
1.5 Set Hardware
Flow Control
Trigger Level Dec
Hex
ASCII 254 62
FE 3E
■ >
Level
Level
Level v8.0
Sets the hardware flow control trigger level. The Clear To Send signal will be deactivated once the number of
characters in the display buffer reaches the level set; it will be reactivated once all data in the buffer is handled.
Level Byte Trigger level as above.