We produce a model of machinery that comes standard with a MicroLogix 1500 and a 9300-RADKIT modem for dial up troubleshooting and support. The modem talks to Comm. 1 via RS232 DF1. The problem is that this machine is sometimes installed outside or far away from a dedicated phone line. The customers usually don’t want to spend the $$ to install a new phone line that far. One customer’s installation is about 900 ft. from a building. They tried running a phone line out to the machine, but it was through a switching system and I kept getting voicemail when I tried to dial it up.
I’m looking for a simple way to put the AB modem on a wireless system. Several venders have pushed Cellular modems, but they have not been PLC tested and we don’t want to be responsible for access charges, etc.
I’d like to take the 9300 modem out of the machine and install it in a building with the required analog phone line. Then, I’d plug the serial out on the modem to a wireless transmitter and then hook the receiver to the PLC on the machine (Comm. 1). Does this sound feasible, and if so, what brand device would you recommend? I’ve found some MaxStream wireless modems in a catalog that look promising. I find it hard to believe that AB pawns this sort of thing off on “Encompass Partners”.
I’m looking for a simple way to put the AB modem on a wireless system. Several venders have pushed Cellular modems, but they have not been PLC tested and we don’t want to be responsible for access charges, etc.
I’d like to take the 9300 modem out of the machine and install it in a building with the required analog phone line. Then, I’d plug the serial out on the modem to a wireless transmitter and then hook the receiver to the PLC on the machine (Comm. 1). Does this sound feasible, and if so, what brand device would you recommend? I’ve found some MaxStream wireless modems in a catalog that look promising. I find it hard to believe that AB pawns this sort of thing off on “Encompass Partners”.
