Murata Electronics North America 910M Manual Do Utilizador

5.3.  Protocol Commands 
 

These commands can be used to tune the transceiver for optimum transmission of data 
across the RF link.  For most applications, the default values are adequate. 

 

 

Command 

 

Description 

 
ph[?|00-fe] 

 

 
Set Hop Duration 
 

87 = default (=25ms) 

 
pk[?|00-d0] 

   

 
Set Minimum Data Length 
 

01

 = default 

 
pl? 

(remote only)   

 
Get Maximum Data Length (read only) 
 

D4

 = default (=212 bytes) 

pn[?|01-3e] 

(base only) 

Set Maximum Number of Remotes 
 

3e = default (=62 remotes) 

 
pr[?|00-ff] 
                                   

 
Set Packet Attempts Limit 
 

10H

 = default 

 

FFH

 = Infinite retry (RF flow control point-to-point only) 

 
pt[?|00-ff] 

 

 
Set Data Transmit Delay 
 

00H

 = default    

pv[?|0|1] 
 

(base only) 

Set Slot Assignment Mode 
 

0 

= default (dynamic slot assignment) 

 

1

 = static slot assignment 

pw[?|00-34] 

(base only) 

Set Base Slot Size 
 

08H

 = default (=32 bytes) 

px[?|0|1] 

Set ARQ mode.   
 

0

  = ARQ enabled (default) 

 

1

  = ARQ disabled (redundant transmission) 

Note: Incorrect setting of these parameters may result in reduced throughput or loss of data packets.   

 
 

Set Hop Duration 
Sets the length of time the transceiver spends on each frequency channel.  A smaller 
value will allow the remote to lock on to the base signal faster at system startup, and will 
generally decrease packet latency.  A larger value increases network capacity, due to 
decreased overhead in channel switching.  The hop duration is specified in 185.2µs 
increments.  The default value of 

 corresponds to a duration of 25ms.  The maximum 

value of 

 is 47.02ms.  For best results, do not specify a duration of less than 15 ms.  

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