I'm having trouble getting a response over rs232 from a vision av-1700 amp I'm using for a project

Commands for controlling the amp work fine, but its meant to send a response back, to get current volume levels back into girder etc..

I'm connecting to it through a global cache box.

Connecting:

if lt134 == nil then
local SimpleSendReceive = require('examples.simpleSendAndReceive')
lt134 = SimpleSendReceive.new('6.28.192.34',4999)
lt134:connect()
end

Sending:

test = math.hextobyte('A51515')
lt134:send(test)


using the global cache "iTest" tool
I can see the response, but I cant seem to find a way to get it into girder

any advice?

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