Product details description:
Saftronics EZ6 40 Line interface module
Although the maximum number of connections that can be set for a EZ6 40 transmission system is 20, simultaneous communication is allowed for only up to 10 connections. This is because only 10 channels are provided for communication between the CPU and a EZ6 40 Module and these channels are occupied until the MSG-SND or MSG-RCV function has been completed. When the EZ6 40 transmission system is used with 11 stations or more, one channel must be used by two stations and the communication designation must be switched using the ladder program so that the EZ6 40 transmission system communicates with the second station only after it has finished communicating with the first station. In programming cases like this, the execute input for the MSG-SND and MSG-RCV functions must not be always ON.
Procedure to Start Communication Use the following procedure to start communication. 1. Start executing the MSG-RCV function in the Slave EZ6 40 Module. Always execute the MSG-RCV function first. 2. Turn ON the Execute parameter in the MSG-SND function in the Master EZ6 40 Module to send a message.
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