25.02.2021, 16:21
I have two LMs and I run one script on them to transfer values from LM via Modbus. On one of the LMs everything works fine, on the second "Transaction ID error". Please help me! I'm still quite a beginner.
The first LM has package luamodbus 20160606
On the second LM - luamodbus 20190219
The first LM has package luamodbus 20160606
On the second LM - luamodbus 20190219
Code:
if not mb then
require('genohm-scada.eibdgm')
require('luamodbus')
-- list of coil mapping, starting from 0
coils = {}
-- list of register mapping, starting from 0
registers = {
{'40/1/5',dt.float32,0},{'40/1/6',0xFF,1}
}
holdingRegisters = {
{'40/1/7',dt.uint16}
}
-- list of register data types, element count must match registers table
-- knx group write callback
function knxgroupwrite(event)
local value
-- try to find matching coil
for id, addr in ipairs(coils) do
if event.dst == addr then
value = knxdatatype.decode(event.datahex, dt.bool)
mb:setcoils(id - 1, value)
end
end
-- try to find matching holding register
for id, addr in ipairs(holdingRegisters) do
if event.dst == addr[1] then
value = knxdatatype.decode(event.datahex,addr[2])
mb:setregisters(id-1, value)
end
end
-- try to find matching input register
for id, addr in ipairs(registers) do
if event.dst == addr[1] then
if (addr[2]==dt.float32) then
value = knxdatatype.decode(string.sub(event.datahex,1,4), dt.uint32)
mb:setinputregisters(1+addr[3], value)
value = knxdatatype.decode(string.sub(event.datahex,-4), dt.uint32)
mb:setinputregisters(addr[3], value)
elseif (addr[2]==0xFF) then
else
value = knxdatatype.decode(event.datahex,addr[2])
mb:setinputregisters(addr[3], value)
end
end
end
end
-- coil write callback
function mbwritecoils(coil, value)
local addr = coils[ coil + 1 ]
if addr then
grp.write(addr, value, dt.bool)
end
end
-- register write callback
function mbwriteregisters(register, value)
local addr = holdingRegisters[ register + 1 ][1]
if addr then
grp.write(addr, value, holdingRegisters[ register + 1][2])
end
end
-- knx group monitor, handles group writes
knxclient = eibdgm:new({ timeout = 0.1 })
knxclient:sethandler('groupwrite', knxgroupwrite)
-- modbus slave, listen on all interfaces and default port 502
mb = luamodbus.tcp()
mb:open('0.0.0.0', 502)
--setting slave id is optional
--mb:setslave(1)
mb:setreceivetimeout(0.1)
mb:setmapping(#coils, 0, #holdingRegisters, #registers)
-- init coils
for id, addr in ipairs(coils) do
value = grp.getvalue(addr)
mb:setcoils(id - 1, value)
end
-- init holding registers
for id, addr in ipairs(holdingRegisters) do
value = grp.getvalue(addr[1])
mb:setregisters(id - 1, value)
end
-- init registers
for id, addr in ipairs(registers) do
if (addr[2]==dt.float32) then
elseif(addr[2]==0xFF) then
else
value = grp.getvalue(addr[1])
mb:setregisters(addr[3], value)
end
end
-- set callbacks for coil and register write
mb:setwritecoilcb(mbwritecoils)
mb:setwriteregistercb(mbwriteregisters)
end
-- handle modbus and knx
mb:handleslave()
knxclient:step()
