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Remotely turn off Display Computers (through RS-232) ?


Johan Kok

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Hello,

 

I would really like to be able, just as I can from a production machine, to (neatly) turn off the connected display computers.

In a current setup I'm controlling a cluster through RS-232, and I want to switch them off before the power is shut down every day.

 

I couldn't find any reference of this in the manuals, so I'm trying my luck here.

 

Thanks in advance,

 

Johan

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Hello,

 

I would really like to be able, just as I can from a production machine, to (neatly) turn off the connected display computers.

In a current setup I'm controlling a cluster through RS-232, and I want to switch them off before the power is shut down every day.

 

I couldn't find any reference of this in the manuals, so I'm trying my luck here.

 

Thanks in advance,

 

Johan

There is no cluster control of power.

 

The production computer (watchmaker) talks to each individual

WATCHOUT Display (watchpoint) computer to power them down.

No big deal with IP like watchmaker does it.

So if you wanted to do it through RS-232, at the least,

you would need to connect and enable RS-232 to every individual computer.

 

to powerDown an indivual watchpoint computer, connect to that computer,

authenticate at Level 2 and send the (case sensitive) command

 

powerDown

 

Another useful individual / level 2 watchpoint command is

 

getMACAddr

 

Retrieves the MAC address of the watchpoint computer connected too, if possible,

as six bytes.

A General Runtime Error is returned instead if the MAC address is unknown.

 

Example:

getMACAddr

Reply 23 33 12 45 143 230

 

where Reply is the response returned by WATCHPOINT for the command.

IP control users probably want to use command tagging here to tie the response to the query.

 

watchmkaer sends the getMACAddr command and stores the MAC address for later use on power on (Wake On LAN).

That is why you must first power down from watchmaker before power up can work.

(and after a successful power off / power on cycle, save your show file to store the MAC addresses).

Of course, you can not power on with RS-232, as that port is dead with power off.

The NIC of course is designed to provide power up with the computer off.

 

 

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