PROFIBUS Manual

Set_Parameter sequence

Set_Parameter sequence

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Set_Parameter sequence

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The DP master sends parameters to the DP slave in a Set-Parameters telegram. For this purpose it sends an SRD service to SAP 61. The slave responds with a short confirmation (one character).

 

Addr

Msg type

Req Res

SAPS

Len

Data

1->22

Set Parameters

Req

62-> 61

7

B8 01 63 0B 05 AA 22

1<-22

Ack

Res

 

 

 

 

After receipt of the valid parameters, the DP-Slave switches its state from "Wait Parameter" (WPRM) to the state "Wait Configuration" (WCFG).

 

If the parameters are faulty, e.g. wrong ident number, the slave waits in the WPRM state and in the next diagnosis the parameter fault bit is set (Prm_Fault).