User manual
49TPTQ-104C ♦ 48TQuantum Platform  Hot Standby Support 
47TIEC 60870-5-104 Client 
  12TUser Manual 
Example #2 
  Stand-alone application scan time: 80 ms   
  Data (state RAM + unlocated variables): 300 Kb 
Note: In addition to the above times for system overhead, the PTQ-104C module may acquire from 
100 ms to 300 ms of switch-over time. All configured data is to be updated as fast as the combined 
asynchronous events occur based on the processor scan time, backplane transfer time, PTQ data 
handling time and IEC 60870-5-104 bus cycle time. The IEC 60870-5-104 bus cycle time is based 
on slave reaction time, sync time, baud rate and other bus delay times for a given number of 
servers on the network.  
ProSoft Technology, Inc.  Page 87 of 136 
March 4, 2013 










