ProSoft Technology 5201-DFNT-104S - Manual (Page 65)

IEC-60870-5-104 (104S) Protocol Implementation 104S v2 ♦ ProLinx Gateway
Protocol Manual (Firmware v2.xx)
ProSoft Technology, Inc.
Page 65 of 157
3.4.2 Command Points Addressing
Command points must be configured in a database area that is updated in the
gateway memory database. You must associate each point to a database
address in the 104S v2 gateway. The interpretation of the DB address parameter
in the configuration tables depends on the point type configured and the type of
addressing associated with that point type.
Data Type Data Size Addressing Type
C_SC_NA 1 bit Bit
C_DC_NA 2 bits Bit
C_RC_NA 1 byte Byte
C_BO_NA 2 words Double-word
C_SE_NA 1 word Word
C_SE_NB 1 word Word
C_SE_NC 2 words Double-word
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
March 19, 2010