The Status Bit reflects the Status of the individual Read Request. Status Bit that specifies a Read Request has been sent and a reply has been received, but it may not necessarily have been a good reply.
Status Bit that specifies a Read Request is in progress inside of the CPU (sent from the instruction but not yet sent out the Ethernet Port). Slave Node range is 1 to 247, with a default of 1. RS232 or RS485 CPU Port or P3-RS/RX Remote Slave Port that will perform Modbus Read Requests. Ethernet Slave Node range is 0 to 255, with a default of 255. Typically used for Modbus TCP to Modbus RTU bridges but some server devices may require different values. Some devices will require a different value. Enabled when Ethernet Port is selected.ĭefault is 502 (specified by Modbus TCP specification).
IP Address of the Modbus TCP server that the Request will be sent to. Selectable Option with Drop-down SelectionĬPU External Ethernet Port that will send Modbus Read requests. When Enable is OFF, the instruction is not solved and its outputs are not updated. When Enable is ON, the instruction will operate every scan. Perform Read requests from the CPU to Modbus TCP Ethernet and Modbus RTU Serial Slave devices.
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