AMX AXlink Bus Controllers AXB-232++ - Manual (Page 17)

Programming
13 AXB-232++ RS-232/422/485 Interface
AXB-232++ Program Statements
The Axcess program of the AXB-232++ communicates with the master as Device 0. Its device
communicates with the RS232/422 Input/Output (I/O) of the AXB-232++ as Device 1. The
following table lists AXB-232++ statements.
AXB-232++ Program Statements
Statement Function
CREATE_BUFFER
0,buffer
Places strings that come from the Master into buffer. If no CREATE_BUFFER
0 exists, the incoming strings from the Master are sent out the RS232 port.
CREATE_BUFFER
1,buffer
Places strings that come from the RS-232 port into buffer. If no
CREATE_BUFFER 1 , exists, the incoming strings are sent to the Master.
CREATE_BUFFER
2,buffer
Places commands (i.e. SEND_COMMANDs ) that come from the AXlink Master
into the buffer. Each command will be preceded by 2 characters: The first char-
acter will always be an '*', the second character is the length of the command,
the remaining n characters (as given in the second character) are the
command itself.
CREATE_LEVEL
0,level,variable
Places levels sent by the master for level in variable.
OFF[0,channel] • Sends a RELEASE to the Master.
• Sends a message that channel is off.
OFF[1,channel] Turns off a channel. This command has no external effect. It can be used as
status.
ON[0,channel] • Sends a PUSH to the Master.
• Sends a message that channel is on.
ON[1,channel] Turns on channel. This command has no external effect. It can be used as sta-
tus.
SEND_COMMAND
0,command
Sends command to the Master. Provides support for commands like 'RDS' .
SEND_COMMAND
1,command
Sends command to the AXB-232++ as if the Master had sent it.
SEND_COMMAND
AXB_232,
'BAUDHIGH'
Sets the baud rate to 115.2k (DIP switch set to 300).
SEND_COMMAND
AXB_232, 'BAUDLOW'
Sets the baud rate to 300 (DIP switch set to 300).
SEND_COMMAND
AXB_232, 'CB1ON'
Enables placement of characters in the buffer specified by
CREATE_BUFFER 1 .
SEND_COMMAND
AXB_232, 'CB1OFF'
Disables placement of characters in the buffer specified by
CREATE_BUFFER 1 .
SEND_LEVEL
0,level,variable
Sends variable as the value for level.
SEND_STRING
0,string
Sends string to the Master.
SEND_STRING
1,string
Sends string out the RS-232 port.