Prosoft-technology 5201-MNET-101S Instrukcja Użytkownika Pobierz pdf (Strona 70)

Reference IEC-101 Slave ♦ ProLinx Communication Gateway

Protocol Manual IEC 60870-5-101 v3 Slave (Firmware version 3.xx)

Page 70 of 159 ProSoft Technology, Inc.

August 6, 2010

Type ID Type Description Data Representation

13 M_ME_NC_1 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)

15 M_IT_NA_1 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 is stored in a double-

word (32-bit) value with a range of -

..+2

-1.

45 C_SC_NA_1 Single-point Command: This command

controls a single binary point such as a relay.

Single bit value with 0 = Off and 1 = On

46 C_DC_NA_1 Double-point Command: This command

controls a dual-point binary control device

such as a trip/close relay.

Double Command with 0 = Not permitted 1

= Off 2 = On 3 = Not permitted

47 C_RC_NA_1 Regulating Step Command: This command

controls a stepping device such as a

transformer.

Regulating Step Command with 0 = Not

permitted 1 = Next step lower 2 = Next

step higher 3 = Not permitted

48 C_SE_NA_1 Setpoint Command, Normalized Value: This

command controls an analog device.

Normalized values are stored in a (16-bit)

word data area with a range of -1..+1-2

-15

49 C_SE_NB_1 Setpoint Command, Scaled Value: This

command controls an analog device.

Scaled values are stored in a (16-bit) word

data area with a range of -2

+215

-1

50 C_SE_NC_1 Setpoint Command, Short Floating-Point

Value: This data type is used for analog input

data stored in floating point format according

to the IEEE STD 754, QDS format.

Short floating-point number stored in IEEE

STD 754 format (Fraction, Exponent, Sign)

51 C_BO_NA_1 32-Bit Bitstring Binary State Command: This

data type is used to hold and transmit binary

state data as bitstrings of 32 bits.

Bitstring data is stored as groups of 32

bits, with each bit representing the state of

an object: 0=Off and 1=On

A key concept in interfacing the protocol with the internal database is the

relationship between the IEC-60870-5-101 databases and the data transfer

operation between the driver and gateway's internal database. The control data

types, C_XX_XX_1, are transferred from the driver to the gateway's internal

database. This data can then be used by the other gateway protocol or processor

in which the gateway is installed to control other devices. The monitor data types

(M_XX_XX_1) are sourced from the gateway's internal database and is

transferred to the remote Master on the IEC-60870-5-101 network.

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