Brand:BENTLY

Type:1900/65A-01-02-01-00-00

Origin:the United States

Warranty: 365 days

Colour: new/used

Shipping method: Courier delivery

Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, mechanical, electronic manufacturing, automobile manufacturing, plastic machinery, electric power, water conservancy, water treatment/environmental protection, boiler heating, energy, power transmission and distribution and so on.

Spare parts spare parts, the main DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

This function provides a series of tests for checking the communication system between a master device and a slave, or for checking various internal error conditions within a slave. The function uses a two-byte sub-function code field in the query to define the type of test to be performed. The slave echoes both the function code and sub-function code in a normal response. Some of the diagnostics commands cause data to be returned from the remote device in the data field of a normal response. In general, issuing a diagnostic function to a remote device does not affect the running of the user program in the remote device. Device memory bit and register data addresses are not accessed by the diagnostics. However, certain functions can optionally reset error counters in some remote devices.

A server device can, however, be forced into 'Listen Only Mode' in which it monitors the messages on the communications system but not respond to them. This can affect the outcome of your application program if it depends upon any further exchange of data with the remote device. Generally, the mode is forced to remove a malfunctioning remote device from the communications system. Sub-function Codes Supported Only Sub-function 00 is supported by the MVI69E-MBS module. 00 Return Query Data The data passed in the request data field is to be returned (looped back) in the response. The entire response message should be identical to the request. Sub-function Data Field (Request) Data Field (Response) 00 00 Any Echo Request Data Example and State Diagram Here is an example of a request to remote device to Return Query Data. This uses a sub-function code of zero (00 00 hex in the two-byte field). The data to be returned is sent in the two-byte data field (A5 37 hex). Request Response Field Name (Hex) Field Name (Hex) Function 08 Function 08 Sub-function Hi 00 Sub-function Hi 00 Sub-function Lo 00 Sub-function Lo 00 Data Hi A5 Data Hi A5 Data Lo 37 Data Lo 27