104S
♦
ProLinx Gateway
IEC-60870-5-104 (104S) Protocol Implementation
(Firmware v3.00 and later)
Protocol Manual
ProSoft Technology, Inc.
Page 61 of 157
January 22, 2010
Mode D
To select the Mode D, configure the F
reeze Start Type
parameter as
N
OT
U
SED
. For
this mode, the Client would periodically send Counter Interrogation Commands to
perform the freeze operation. After the values are frozen, the gateway will return the
counter points as events. The counter points must be properly configured for counter
interrogation groups for Mode D operation to be successful.
3.3.2 Monitor
Points
Addressing
As discussed before, the monitor points must be configured in a database area in
the 104S 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_BO_NA 2
words
Double-word
M_ME_NA 1
word
Word
M_ME_NB 1
word
Word
M_ME_NC 2
words
Double-word
M_IT_NA 2
words
Double-word
Summary of Contents for ProLinx 104S
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