VXi VT1529A/B 사용자 설명서

1. When the number of update requests exceeds the Update Queue size set with 

ALG:UPD:WINDOW by one, the module will refuse the request and will 
issue the error message "Too many updates in queue. Must send UPDATE 
command." Send ALG:UPDATE, then re-send the update request that caused 
the error.

2. The "Too many updates in queue..." error can occur before the module is 

INITialized. It's not uncommon with several algorithms defined to have more 
variables that need to be pre-set before INIT than will be changed in one 
update after the algorithms are running. It may be necessary to send INIT with 
updates pending. The INIT command automatically performs the updates 
before starting the algorithms.

returns the number of variable and algorithm 

updates allowed within the UPDATE window.

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Returned Value: number of updates in the UPDATE window. The type is int16

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Send with VXIplug&play Function: hpe1422_cmdInt16_Q(...)