Specifications

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APPENDIX E • SERIAL COMMANDS
108
Expansion Bus Reference
DESCRIPTION:
This command selects an output or reports which output is the Expansion Bus reference.
BINARY FORM DETAILS
COMMAND FORM: <Header><Argument 1>
COMMAND ID: 24
ARGUMENT SIZE: 1 word
ARGUMENT FORM:
Name: Channel Group Value
Size 8 bits 8 bits 16 bits
Type Unsigned integer Unsigned integer Unsigned integer
Range 13-16 8 (E) 0-12
RETURN VALUES:
Unit always returns in the same form as above.
TEXT FORM DETAILS
COMMAND FORM: <DEVICE> EREF <Channel> [Value]
Where:
DEVICE: See General Text command form Description
EREF Text Command
Channel 1-4; (see Expansion Bus Reference Channels in Group and Channels, Table 1, page 93)
Value Outputs 1 –12; 0 for none
RETURN VALUES
The command will return the updated in the same format as the command.
If Command Returns
Expansion Bus reference 1 is set to be output 1 DEVICE EREF 1 1