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Section 5
19
Model 9002
Remote Control Operation
Section 5
Remote Control Operation
5.1 - The Control Method
Remote control of the Model 9002 is conveyed on an IEEE-488 bus to the appropriately addressed filter system.
Each Model 9002 system is assigned an address in the 0-31 range, as was discussed in Section 3.5
We recommend that you read and understand Section 4, Operation from the Front Panel, before attempting remote
control of the system. Commands that duplicate front panel controls are not re-explained in this section.
An understanding of programming and use of the IEEE-488 interface bus structure is necessary for effective use of
the remote mode of operation. Your computer or other remote controller must be outfitted with the appropriate IEEE-
488 card to implement remote operation of the Model 9002.
As an assist, conversion tables from binary to decimal to hex are given in Appendix B. For ease of notation, all binary
commands are stated in hex throughout this section. Hex commands are identified by the presence of a $ sign
before the hex number.
5.2 - Programming Rules
The Model 9002 accepts only eight-bit binary data. Codes sent to control the Model 9002 will be referred to as
programs. These programs must begin with the start code $11 and conclude with the end code $13. If either code is
omitted, the Model 9002 will not accept the communicated program.
The maximum length of a program is 256 bytes including the start and end codes. Programs requiring more than 256
bytes of information must be sent as two consecutive programs with separate start and end codes.
Programming is accomplished by combining codes that simulate front panel controls (key-push commands) and
keyboard inputted numbers, as well as single and multi-byte special command codes.
The Model 9002 can be set up to receive remote data by means of a front panel command or a remote command. At
the front panel, you press the REM CTL function key. At the remote controller, send special codes $0F, Go to Remote
Control. The front panel is inactive when the Model 9002 is in remote control.
A typical program for setup by remote command is:
The unit remote address can be set at the front panel or by using an IEEE-488 command. If the command is used to
change the address, the display will not show this new address. However, the system will only listen to commands at
the new address. This address will remain in effect until a new address is sent or the Model 9002 is returned to local
control and the front panel address is active.
Code Function
$11 Start
$0F Go to Remote Control
$13 End
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