Specifications

GEMINI
2
Traffic Outstation Handbook
667/HB/32600/000 Page 213 Issue 11
For read operations, following typing of the command code and any indices if
applicable, operation of the ENTER (or ‘RETURN’) key terminates the command.
For write operations an equals sign ‘=’ followed by the parameter required is added to
the read command before selecting ENTER (or ‘RETURN’). Thus, for example:
- To read the analogue data the command is:
KAC 1 0 followed by ENTER or RETURN
<Command Code> <Channel Number> <Voltage or Current Selection>
- To reset the Power-up statistics data (first element of six) the command is:
PUD 0 = 0 followed by ENTER or RETURN
<Minor Index (first element> <Write Data Label> <New Data>
The ‘+’ (or ‘.+’) and ‘-’ (or ‘.-’) keys may be used after a basic read command has
been entered to enable the MINOR index (or MAJOR index) to be modified to scan the
Outstation.
13.1.2 Display Format
The two basic display formats are:
Echo display that is simply an echo of the information typed.
Response display generated by the Outstation when the command is terminated by
operating the ENTER (or ‘RETURN’) key or the ‘+’ (or ‘.+’) keys.
The response displays include:
Read response display comprising a repeat of the command with spaces between
the fields and a colon and data added, e.g.
PUD 0:0
Write response display in which the command is repeated with the ‘=‘ replaced with a
colon, i.e. identical to the corresponding read response display.
Error response display in which the command is repeated with an asterisk and error
code added, e.g.
PUD AB*S
Indicating the command has a syntax error and should be repeated correctly.
Other display formats comprise those without the command repeated due to lack of
display character width; e.g. response to monitor digital inputs command DIP. Where
the command deviates from the normal in either of these respects this is indicated in
the command table.
13.1.3 Read Procedure (Monitor Existing Data)
1. Plug the handset into the socket on front of the Outstation.