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GOSSEN METRAWATT GMBH 11
2.4 Function and value range of the format characters
2.4.1 Equipment address
• 0 ... 250 Range for individual equipment addresses = interface address Addr
• 255 All equipment connected to a bus can simultaneously be addressed under this address. Data and instructions entered with this address
are accepted by all equipment, but there is no acknowledgement made to the master.
2.4.2 Function field (FF)
The function field contains
• with the short set the proper user information, predefined by bits and different in request and response direction
• with the control and long set the direction and control information for the transmitted data block
2.4.2.1 Function coding of the function field in request direction
Request check Code Set Remark
Reset equipment 09h
Interrogation: Equipment OK? 29h Short set
Request cycle data from equipment 89h The R2600/01 evaluates the given codes only; an error acknowledgement is
issued for invalid ones
Request event data from equipment A9h
Send data to R2600/01 69h Long set
Request data from R2600/01 89h