ProSoft Technology MVI56-104S - Manual (Page 113)

Reference MVI56-104S ♦ ControlLogix Platform
User Manual IEC 60870-5-104 Server Communication Module
ProSoft Technology, Inc.
Page 113 of 188
November 18, 2009
Monitor Points Addressing
As discussed before, the monitor points must be configured in a database area in
the MVI56-104S module.
The monitor data types are described in the following table.
Data Type Data Size Addressing Type
M_SP_NA 1 bit Bit
M_DP_NA 2 bits Bit
M_ST_NA 1 byte Byte
M_ME_NA 1 word Word
M_ME_NB 1 word Word
M_ME_NC 2 word Double-Word
M_IT_NA 2 word Double-Word
M_SP_NA and M_DP_NA
The monitored single-point (1 bit) and monitored double-point (2 bits) types both
occupy bit-addressing. For example, if you configured the following points:
The following table describes how these points would be used.
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 monitored double-point uses two bits with bit-addressing. It typically
represents the ON/OFF states where:
01 = OFF
10 = ON