eebads2391
Member
Hi ,
I have a weigher connected to a PLC via RS 232
It is 2 way communications between the weigher and the plc
I have very little experience in comms
The weigher is a very old Chronos Pc 454 and the plc is a Gem 80
My ultimate aim is to replace the old weigher with a Chronos pc 456
The 456 uses RS 485
I can replace the weigher and use a RS 232 to RS 485 Converter unit
What id like to check first is can I wire the comms cable to the new weigher in one direction , from the plc to the weigher , so I don't risk sending data to the plc
Just incase I cause a problem by sending comms from the new weigher to the plc
I am asking if I can test the new weigher by only connecting the rx side of the incoming plc comms cable to the weigher , just so I can see if the weigher will respond to the incoming comms
As a separate question
To understand comms better , I have bought a null modem cable and want to connect 2 x laptops together using terminal software
I would like to use a terminal program on both laptops and open a terminal window on each laptop and see comms in each direction
Can you recommend software to do this
Would this software allows me to view incoming Rs 232 from the PLC if I connect the laptop to the incoming data cable at the weigher
I am wanting to " view " the comms from the plc to the weigher
I have a weigher connected to a PLC via RS 232
It is 2 way communications between the weigher and the plc
I have very little experience in comms
The weigher is a very old Chronos Pc 454 and the plc is a Gem 80
My ultimate aim is to replace the old weigher with a Chronos pc 456
The 456 uses RS 485
I can replace the weigher and use a RS 232 to RS 485 Converter unit
What id like to check first is can I wire the comms cable to the new weigher in one direction , from the plc to the weigher , so I don't risk sending data to the plc
Just incase I cause a problem by sending comms from the new weigher to the plc
I am asking if I can test the new weigher by only connecting the rx side of the incoming plc comms cable to the weigher , just so I can see if the weigher will respond to the incoming comms
As a separate question
To understand comms better , I have bought a null modem cable and want to connect 2 x laptops together using terminal software
I would like to use a terminal program on both laptops and open a terminal window on each laptop and see comms in each direction
Can you recommend software to do this
Would this software allows me to view incoming Rs 232 from the PLC if I connect the laptop to the incoming data cable at the weigher
I am wanting to " view " the comms from the plc to the weigher