Compatibility test method based on S7 industrial protocol compatible industrial gateway

The invention discloses a compatibility test method based on an S7 industrial protocol compatible industrial gateway. The compatibility test method comprises the following steps: S1, developing abnormal conditions which can be encountered certainly in various S7 protocol acquisition processes into scripts; S2, realizing an exception test by completely simulating various exceptions of real PLC equipment; S21, acquiring message information of field equipment by a test gateway, uploading the message information to serial port information through a TTL serial port, and determining basic acquisition data correctness of a protocol; S22, after the data acquisition is correct and errorless, returning an abnormal message to the script return information; and S23, taking the fault tolerance and theprocessing mechanism of the tested system for protocol acquisition exception as the basis for judging the compatibility of the industrial gateway. According to the invention, the environment requiredfor constructing the messa