BOLT 7X0463 - Caterpillar

Illustration 3 g01721473
Modbus Statistics screen 3Modbus TCP packets received - The total number of valid properly formatted "Modbus TCP" packets successfully received by the PL1000E over the Ethernet port.Modbus TCP Receive Errors - The total number of errors identified by the ECM while attempting to receive "Modbus TCP" packets on the Ethernet port. These errors can be caused by incorrectly formatted messages being transmitted by the "Modbus Master" or another "Modbus Slave" connected to the Ethernet port. Additionally, these errors may be caused by requests for registers or "Modbus Function" code not supported by the ECM.Modbus TCP packets transmitted - The total number of "Modbus TCP" packets successfully transmitted by the ECM on the Ethernet port.Modbus TCP transmit errors - The total number of errors identified by the ECM while attempting to transmit Modbus messages on the communications port.Modbus TCP no responses - Every time the ECM receives a valid, properly formatted Modbus message, the ECM increments this counter. Each time the ECM transmits a Modbus message, the ECM decrements this counter. The increment and decrement actions occur within milliseconds and are typically not viewable on the status screen. However, if this value is other than zero this would indicate the ECM is receiving Modbus messages and not responding. The ECM configuration should be verified and the PCL file should be reviewed in order to insure the desired parameters and Modbus communications are configured appropriately.Modbus TCP connections - The total number of "Active Modbus TCP" connections identified and being serviced by the ECM on the Ethernet port. The ECM is capable of supporting up to 10 "Modbus TCP" connections at the same time.Modbus RTU packets received - The total number of RTU messages received successfully by the ECM. These totals represent all Modbus RTU messages received on all configured Modbus ports. The ports are "RS-232 Port 1", "RS-232 Port