ProSoft Technology 5201-MNET-101S - Manual (Page 97)

IEC-101 Slave ♦ ProLinx Communication Gateway Reference
IEC 60870-5-101 v3 Slave (Firmware version 3.xx) Protocol Manual
ProSoft Technology, Inc. Page 97 of 159
August 6, 2010
C_SE_NA and C_SE_NB
The Control Normalized Value Set Point Command information object and the
Control Scaled Value Set Point Command information object use one word with
word addressing. For example, if you configured the following points:
The following table describes how these points would be used.
Inf. Object Address Module Database Address
1100 Word 2000 (Word address 2000)
400 Word 10 (Word address 10. Must match the
configuration of point 400 in M_ME_NA.)
1101 Word 2001 (Word address 2001)
401 Word 12 (Word address 12. Must match the
configuration of point 401 in M_ME_NA.)
1102 Word 2002 (Word address 2002)
402 Word 18 (Word address 18. Must match the
configuration of point 402 in M_ME_NA.)
The Control Normalized Measured information objects use a data representation
defined by the protocol specification to represent fractional decimal values. The
following table describes the value for each bit as a reciprocal power of two (2),
that is two (2) raised to the power of a negative exponent (-1 through -15). Bit 15
is the Sign Bit.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Value
Hex(h)
Decimal
Sign 4000h
2 -1
2000h
2 -2
1000h
2 -3
800
h
2 -4
400
h
2 -5
200
h
2 -6
100
h
2 -7
80
h
2 -8
40
h
2 -9
20
h
2 -10
10
h
2 -11
8h
2 -12
4h
2 -13
2h
2 -14
1h
2 -15
4000h
0.5
0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2000h
0.25
0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
1000h
0.125
0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
6000h
0.75
0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0
3210h
0.395751953125
0 0 1 1 0 0 1 0 0 0 0 1 0 0 0 0