User manual

Reference PTQ-104S Rev2 ♦ Quantum Platform
User Manual IEC 60870-5-104 Server for Quantum
Page 146 of 195 ProSoft Technology, Inc.
February 22, 2013
C_SC_NA and C_DC_NA
The single-point command and dual-point command points use one bit with bit
addressing. For example, if you configure the following points:
These points would be used as follows:
Inf. Object Address
Module Database Address
100
Bit 0 of word 100
101
Bit 1 of word 100
102
Bit 2 of word 100
The protocol specification defines a qualifier value that is set by the Master to
determine the duration of the pulse (short, long or persistent). Configure the
parameters below to set the duration of the short and long pulses: