ProSoft Technology MVI69-101S User Manual
Page 89
Reference MVI69-101S
♦ CompactLogix or MicroLogix Platform
IEC 60870-5-101 Slave Communication Module
ProSoft Technology, Inc.
Page 89 of 149
March 16, 2009
This section discusses the databases utilized by the module to support the IEC
60870-5-101 protocol. The user is responsible for defining the databases for their
specific application. In the module's configuration file, the size of each database
and definition of each point is established. Refer to the Module Configuration
section for a complete discussion of the configuration file. The following table
summarizes the data types used in each of the 11 individual databases.
Type ID
Type
Description
Data Representation
1
M_SP_NA_1
(7.3.1.1)
Monitored Single-point Information: This data
type stores a single binary input point.
Associated time-tagged event information for
this type are M_SP_TA_1 (2) and M_SP_TB_1
(30).
Single bit value with (7.2.6.1) 0=Off and
1=On.
3
M_DP_NA_1
(7.3.1.3)
Monitored Dual-point Information: This data
type stores a dual-point binary input value (that
is, valve status). Associated time-tagged event
information for this type are M_DP_TA_1 (4)
and M_DP_TB_1 (31).
Dual-bit status (7.2.6.2) with 00b (0
decimal) = indeterminate or intermediate,
01b (1 decimal) = Off, 10b (2 decimal) =
On and 11b (3 decimal) = indeterminate.
5
M_ST_NA_1
(7.3.1.5)
Monitored Step-point Information: This data
type is used for step position of transformers
or other step position information. The value
for the position ranges from -64 to 63.
Associated time-tagged event information for
this type are M_ST_TA_1 (6) and M_ST_TB_1
(32).
Step data (7.2.6.5) is stored in a single
character value with bits 0 to 6 (-64 to +63)
representing the step position and bit 7
representing the following states: 0 =
Equipment is not in transient state 1 =
Equipment in transient state
9
M_ME_TA_1
(7.3.1.9)
Monitored Normalized Measured Value: This
data type is used for analog input data.
Associated time-tagged event information for
this type are M_ME_TA_1 (10) and
M_ME_TD_1 (34).
Normalized values (7.2.6.6) are stored in a
(16-bit) word data area with a range of -
1..+1-2
-15
11
M_ME_NB_1
(7.3.1.11)
Monitored Scaled Measured Value: This data
type is used for analog input data. Associated
time-tagged event information for this type are
M_ME_TB_1 (12) and M_ME_TE_1 (35).
Scaled values (7.2.6.7) are stored in a (16-
bit) word data area with a range of -2
15
..
+215
-1
13 M_ME_NC_1
(7.3.1.13)
Monitored Measured Value, Short Floating-
Point Number: This data type is used for
analog input data stored in floating point
format according to the IEEE STD 754, QDS
format. Associated time-tagged event
information for this type are M_ME_TC_1 (14)
and M_ME_TE_1 (36).
Short floating-point number stored in IEEE
STD 754 format (Fraction, Exponent, Sign)
(7.2.6.8)
15
M_IT_NA_1
(7.3.1.15)
Monitored Integrated Total-point Information:
This data type stores meter or other count
data. Associated time-tagged event
information for this type are M_IT_TA_1 (15)
and M_IT_TB_1 (37).
Binary counter data (7.2.6.9) is stored in a
double-word (32-bit) value with a range of
-2
31
..+2
31
-1.
45
C_SC_NA_1
(7.3.2.1)
Single-point Command: This command
controls a single binary point such as a relay.
Single bit value (7.2.6.15) with 0 = Off and
1 = On
46
C_DC_NA_1
(7.3.2.2)
Double-point Command: This command
controls a dual-point binary control device
such as a trip/close relay.
Double Command (7.2.6.16) with 0 = Not
permitted 1 = Off 2 = On 3 = Not permitted
47 C_RC_NA_1
(7.3.2.3)
Regulating Step Command: This command
controls a stepping device such as a
transformer.
Regulating Step Command with
(7.2.6.17)0 = Not permitted 1 = Next step
lower 2 = Next step higher 3 = Not
permitted