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Modbus / Re: TCP over Ethernet help
« on: June 13, 2015, 09:23:54 PM »
The brain does not write to the modus interface as such. Brains write to a memory buffer area only. The area is defined by the CFG# number in the Modbus plugin.
The Modbus plugin transfers the data in the CFG# continuously at the rate defined in the plugin, i.e. 25Hz
-------------------------------------------------
"Enter Modbus Address to use:" 0
"Output" Radio selected
"Bit Only" Checked
"0" Bit 0-15
Source: "TCP Modbus" Radio button, Cfg# "0"
This would display in the brain Terminator as MOD:0-D0-T:0, correct?
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In the above, ""Enter Modbus Address to use:" 0" defines the offset into the Modbus CFG# buffer. It is not the actual modbus address.
Have a look at at the videos that Art produced when he wrote the Modbus plugin. It should give tou a good understanding.
Cheers,
Peter
The Modbus plugin transfers the data in the CFG# continuously at the rate defined in the plugin, i.e. 25Hz
-------------------------------------------------
"Enter Modbus Address to use:" 0
"Output" Radio selected
"Bit Only" Checked
"0" Bit 0-15
Source: "TCP Modbus" Radio button, Cfg# "0"
This would display in the brain Terminator as MOD:0-D0-T:0, correct?
------------------------------------------------------
In the above, ""Enter Modbus Address to use:" 0" defines the offset into the Modbus CFG# buffer. It is not the actual modbus address.
Have a look at at the videos that Art produced when he wrote the Modbus plugin. It should give tou a good understanding.
Cheers,
Peter