User manual

PTQ-104S Rev2 ♦ Quantum Platform Reference
IEC 60870-5-104 Server for Quantum User Manual
ProSoft Technology, Inc. Page 149 of 195
February 22, 2013
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
3210h
0.395751953125
0
0
1
1
0
0
1
0
0
0
0
1
0
0
0
0
Examples:
A value of 4000hex (only Bit 14 set, all others clear) is interpreted as 0.5 decimal
A value of 2000hex (only Bit 13 set, all others clear) is interpreted as 0.25
decimal
A value of 1000hex (only Bit 12 set, all others clear) is interpreted as 0.125
decimal
... and so on until...
A value of 0001hex (Only Bit 0 set, all others clear) is interpreted as
0.000030517578125
Therefore, the actual data values transmitted may be any combination of the
decimal values for any given bit pattern.
C_SE_NC
A Measured Short Floating- point Command point occupies two words and uses
double word addressing.
For example, if you configured the following points:
The following table describes how these points would be stored in the module:
1300
Words 2600 and 2601 (Double-word address 1300)
500
Words 40 and 41 (Double-word address 20. Must
match the configuration of point 500 in M_ME_NC.)
1301
Words 2602 and 2603 (Double-word address 1301)
501
Words 64 and 65 (Double-word address 32. Must
match the configuration of point 501 in M_ME_NC.)
1302
Words 2620 and 2621 (Double-word address 1310)
502
Word 104 and 105 (Double-word address 52.Must
match the configuration of point 502 in M_ME_NC.)