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We are developing a telemetry system consisting of over 20 remote stations. We are using CIMPLICITY PE software and Modbus RTU plc's. The remote stations are fitted with radio units. On the computer we are using Serial Port configured as a TCP/IP connection. We are able to communcate without any problems when we are polling only one remote station (CIMPLICITY refers to this as a device). However, when we increase the number of devices to be polled, we start getting loss of data. We have found that this is coming from the polling procedure of CIMPLICITY. There is not enough time interval between changing the poll from one device to the other resulting in data corruption. Does anybody know how this can be done?
Is there another way around this problem?
Is there another way around this problem?