C
I'm a mechanical engineer in a E&M company. My boss received a job which is about communication.
The following is the details:
1 mainstation : there is a computer which is used to monitor the real time data. Linux may be used as the OS. We will write a program for receive data
12 sites: there are some alarms which can be sent out a voltage signals. I intend to use the PLC as the transimtter. All the alarm signals are entered the input slot of PLC and the data is transmitted to a modem. Then pass through the 56K cable (the cables are paid only to the mainstation and no need to dial number). So we have 12 lines.
The problems: 1) Is it a effective method for communication (i mean PLC)? 2) I don't know what products can treat 12 lines(56K) to a computer. (hubs?routers? I only know they can treat for 10-base lines) 3) Can anybody tell me what is the effective and good method? If it is suitable, my company will buy the products as soon as possible.
Thank you very much
Calvin
The following is the details:
1 mainstation : there is a computer which is used to monitor the real time data. Linux may be used as the OS. We will write a program for receive data
12 sites: there are some alarms which can be sent out a voltage signals. I intend to use the PLC as the transimtter. All the alarm signals are entered the input slot of PLC and the data is transmitted to a modem. Then pass through the 56K cable (the cables are paid only to the mainstation and no need to dial number). So we have 12 lines.
The problems: 1) Is it a effective method for communication (i mean PLC)? 2) I don't know what products can treat 12 lines(56K) to a computer. (hubs?routers? I only know they can treat for 10-base lines) 3) Can anybody tell me what is the effective and good method? If it is suitable, my company will buy the products as soon as possible.
Thank you very much
Calvin