KNX LogicMachine3 Re:actor, Product Manual

Page: 133 / 160

133
46.
end
47.
48. if type ( request.params ) == 'table' then
49.
table.insert (
request.params, 1, mb
)
50. res
= {
mb
[
fn
]( unpack (
request.params
)) }
51. else
52. res
= {
mb
[
fn
](
mb
) }
53.
end
54.
55.
return
res
56.
end
57.
58. server
=
rpc.server
( '127.0.0.1'
,
28002
,
'mbproxy'
, handler, 0.01
)
59.
end
60.
61. mb:handleslave
()
62. server:step
()
Example: event script which changes modbus slave coil (address 0)
Must be mapped to a group address with binary value.
1. value = event.getvalue ()
2. mb
=
mbproxy.new
()
3. mb:setcoils
( 0
, value
)
Example: event script which changes modbus slave register (address 5)
Must be mapped to a group address with scaling (0..100) value
1. value = event.getvalue ()
2. mb
=
mbproxy.new
()
3. mb:setregisters
( 5
, value
)
7.6. Modbus working with several slaves on the same RS485 connection
The example was designed to interconnect with 16 VRF system in one line through 1 Logic
Machine2.
Resident script
-- modbus init
if not mb then
require('luamodbus')
mb = luamodbus.rtu()
mb:open('/dev/ttyS2', 9600, 'E', 8, 1, 'H')
mb:connect()
mb:setslave(1)
-- a/c list
aclist = {