ProSoft Technology 5201-DFNT-104C - Manual (Page 51)

104C Version 3 ♦ ProLinx Gateway IEC-60870-5-104 Protocol Implementation
IEC 60870-5-104 Client (Firmware v3.xx) Protocol Manual
ProSoft Technology, Inc. Page 51 of 139
August 4, 2011
M_DP_NA
A Monitor Double-Point information object occupies two bits and uses bit
addressing. It typically represents the ON/OFF states where:
00 = Undefined or invalid
01 = OFF
10 = ON
11 = Undefined or invalid
If you configured the following information objects as shown:
The following table describes how these information objects would be stored in
the gateway memory database.
Inf. Object Address Module Database Address
200 Bit 0 & 1 of word 120 (Bit address 1920 & 1921)
201 Bit 2 & 3 of word 120 (Bit address 1922 &1923)
202 Bit 4 & 5 of word 120 (Bit address 1924 & 1925)