ProSoft Technology 5201-DFNT-104S - Manual (Page 57)

IEC-60870-5-104 (104S) Protocol Implementation 104S v2 ♦ ProLinx Gateway
Protocol Manual (Firmware v2.xx)
ProSoft Technology, Inc.
Page 57 of 157
3.3.2 Monitor Points Addressing
As discussed before, the monitor points must be configured in a database area in
the 104S v2 gateway.
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
A Monitored Single-Point occupies one binary bit and uses bit-addressing. For
example, if you configured the following points as shown:
The following table describes how these points would be stored in the gateway
memory database.
Inf. Object Address Gateway Database Address
100 Bit 0 of word 100 (Bit address 1600)
101 Bit 1 of word 100 (Bit address 1601)
102 Bit 2 of word 100 (Bit address 1602)
March 19, 2010