Programming vacon • 2824-hour support +358 (0)40 837 1150 • Email: vacon@vacon.com5Modbus initiates a communication error if the Ethernet connection is lost. Communicationtime-out parameters define the minimum delay between packages received from the client.The timer is reset and started after each received package. This parameter can be used if theclient is periodically polling the slaves.5.4.3 Modbus TCP monitoring valuesThese values will not appear before the connection is established.5.4.3.1 Connection 1P5.X.2.2.1.1 F IELDBUS PROTOCOL STATUSFieldbus Protocol Status tells the status of the protocol.Table 10. FB protocol statusesP5.X.2.2.1.2 C OMMUNICATION STATUSThe Communication status shows how many error and how many good messages the frequen-cy converter has received. The Communication status includes a common error counter thatcounts errors and a counter for good messages.Table 11. Communication statusP5.X.2.2.1.3 I LLEGAL FUNCTIONSThis value counts error situations. The function code received in the query refers to an unal-lowed action for the server (or slave). This corresponds to Modbus fault code 01h .P5.X.2.2.1.4 I LLEGAL DATA ADDRESSESThis value counts error situations. The data address received in the query refers to an unal-lowed address for the server (or slave). This corresponds to Modbus fault code 02h.P5.X.2.2.1.5 I LLEGAL DATA VALUESThis value counts error situations. A value contained in the query data field refers to an unal-lowed value for server (or slave). This corresponds to Modbus fault code 03 h.INITIALIZING Protocol is starting upSTOPPED Protocol is timeouted or not usedOPERATIONAL Protocol is runningFAULTED Major fault in protocol, requires restarting.If fault remains contact fieldbus@vacon.comGood messages0…999 Number of messages received with-out errorsBad Frames0…99 Number of messages received witherrors